Which Scenario Is Likely to Result in Many Hits and a High

Which scenario is likely to result in many hits and a high rate of false alarms? ​

A) Siobhan wants to lose weight, so she decides to alternate between several exercise routines each morning: aerobics, yoga, and weight training.
B) Derek would like to complete his bachelor's degree in 3 years, so he takes extra courses during his summer breaks.
C) Willow is eager to find a summer internship, so she sends her resume to every local business looking for an intern.
D) Carlton is applying to several colleges, and at the last minute, he decides to withdrawal his applications from his "safety" schools.