Customers Arrive at a Bus Station at the Rate of 5

Multiple Choice

Customers arrive at a bus station at the rate of 5 per minute following Poisson distribution. What is the probability of 3 arrivals in a one-minute interval?

A) $\frac{e^{-5} 5^{3}}{3 !}$
B) $\frac{e^{-3} 5^{5}}{3 !}$
C) $\frac{e^{-5} 5^{3}}{5 !}$
D) $\frac{e^{5} 5^{-3}}{5 !}$