Which of the following are examples of first-mover advantage?

a. You make an offer on a house. The seller can only accept or reject the offer. 

b. You and your roommate are dividing chores. The chores are written on slips of paper and drawn from a hat. You get to draw first. 

c. You are first in line to buy a raffle ticket. 

d. You can take vacation whenever you like, as long as no other employees are also scheduled to take vacation. You submit your vacation requests first this year.