Suppose Operation X Feeds Directly into Operation Y

Multiple Choice

Suppose operation X feeds directly into operation Y. All of X's output goes to Y, and Y has no other operations feeding into it. X has a design capacity of 80 units per hour and an effective capacity of 72 units per hour. Y has a design capacity of 100 units per hour. What is Y's maximum possible utilization?

A) 80 percent
B) 72 percent
C) 90 percent
D) 70 percent
E) 60 percent