Annie Is Planning a Large Surprise Party for Her Sister

Annie is planning a large surprise party for her sister Gwendolyn.She has developed the following plan,including estimates of the time (in hours) and cost necessary to perform each of the tasks required. Annie will save $40 for every hour she can reduce from her plan.If Annie crashes only task A to its minimum duration,how much will she save on the project?

A) $55
B) $185
C) $160
D) $50