None of the answers are correct, since the enemies in WtNW only give EXP in multiples of 100, and none of the values change for the entire world.

Gambler = 1000 * 2 (2000)
Dusk = 600 * 3 (1800)

3800; the closest answer would be C, but it isn't. Any math class would make sure of that XD


It would also seem I've made a serious omission in my Bestiary guide, as well.