If the Random Variable X Is Exponentially Distributed with Parameter $\lambda$

Multiple Choice

If the random variable X is exponentially distributed with parameter $\lambda$ = 1.75, then P(1.5 $\le$ X $\le$ 3.8) , up to 4 decimal places, is:

A) $0.0711 .$
B) $0.0473$ .
C) $0.1184 .$
D) $0.4739$ .