Sarah Buys Little Stuffed Animals for $5 Each

Multiple Choice

Sarah buys little stuffed animals for $5 each.They come in different varieties.If the producer stops making (retires) a certain variety,a stuffed animal of that variety will be worth $100;otherwise it is worth $0.There is 50% chance that any variety will be retired.When Sarah buys her next stuffed animal,the expected profit is

A) $50.
B) $47.50.
C) $45.
D) $0.