Muons at Speed 0

Multiple Choice

Muons at speed 0.9994c are sent round and round a circular storage ring of radius 1500 m.If a muon at rest decays into other particles after an average T = 2.2 × 10−⁶ s,how many trips around the storage ring do we expect the 0.9994c muons to make before they decay?

A) 2
B) 4
C) 0.2
D) 6