The Reliability of a New Model of CD Player Can

Multiple Choice

The reliability of a new model of CD player can be described by the exponential function R(t) = 2.7-(1/3) t, where the reliability R is the probability (as a decimal) that the CD player is still working t years after it is manufactured. Round the answer to the nearest hundredth. Then write your answer as a percent.
-What is the probability that the CD player will still work 5 years after it is manufactured?

A) 1%
B) 94%
C) 19%
D) 7%