Finn blogs about video games. In a particular game, a certain enemy occasionally drops a rare item when they are defeated. Finn wants to estimate the likelihood that this enemy drops the rare item, so he defeats the enemy 1000 times and tallies how many times the rare item is dropped.

A. A paired t-interval for the mean difference
B. A z-test for a proportion
C. A t-test for a mean
D. A t-interval for a mean
E. A z-interval for a proportion