, 2003

In a large hospital with several operating rooms, ten people are each waiting for a 45 minute operation. The first operation starts at 8:00 a.m., the second at 8:15 a.m., and each of the other operations starts at 15 minute intervals thereafter. When does the last operation end?

(A) $10:15\text{ a.m.}$ (B) $10:30\text{ a.m.}$ (C) $10:45\text{ a.m.}$ (D) $11:00\text{ a.m.}$ (E) $11:15\text{ a.m.}$