If X Is Uniformly Distributed Over the Interval 8 to 12

If x is uniformly distributed over the interval 8 to 12, inclusively (8 $\le$ x $\le$ 12) , then the probability, P(13 $\le$ x $\le$ 15) , is __________________.

A) 0.250
B) 0.500
C) 0.375
D) 0.000
E) 1.000