[RPG] Does a Dragon’s Wing Attack movement provoke Attacks of Opportunity

From the Rules Compendium, p209

No Opportunity Actions Triggered:

When a creature falls past an enemy, the creature does not trigger opportunity actions, such as opportunity attacks, from that enemy that are triggered by movement."

PHB p.195

You can make an opportunity attack when a hostile creature that you can see moves out of your reach. To make the opportunity attack, you use your reaction to make one melee attack against the provoking creature.

MM p.11

MULTIATTACK

A creature that can make multiple attacks on its turn has the Multiattack ability. A creature can't use Multiattack when making an opportunity attack, which must be a single melee attack.

There are 2 possible interpretations:

1. A creature's reach is a singular thing defined by the reach of its furthest melee attack capability, or
2. Each and every melee attack capability grants the creature a reach; a creature has as many reaches as it has melee attack types.

Option 1

Your ruffian, whose longest melee reach is 5 feet (shortsword), if you move from within 5 feet to outside 5 feet without using the Disengage action, he can attack you with 1 shortsword if he has his reaction available.

For your dragon, whose longest melee reach is 15 feet, if you move from within 15 feet to outside 15 feet without using the Disengage action, he can attack you with 1 tail attack (the only one that will reach), if he has his reaction available.

Option 2

For the ruffian, this interpretation makes no difference.

For the dragon, it has 3 reaches - Claws 5 feet, Bite 10 feet and Tail 15 feet. If it has a reaction available and you move:

1. From 5 feet to 10 feet, it can attack with any one of Claws, Bite and Tail,
2. From 10 feet to 15 feet, it can attack with any one of Bite and Tail,
3. From 15 feet to 20 feet, it can attack with its Tail.

As the dragon only has 1 reaction per turn it can only elect to make one of these even if your movement triggers all 3.