A study of the time spent shopping in a supermarket for a market basket of 20 specific items showed an approximately uniform distribution between 20...

A study of the time spent shopping in a supermarket for a market basket of 20 specific items showed an approximately uniform distribution between 20 minutes and 40 minutes.

1)    What is the probability that shopping time will be exactly 30 minutes?

A.   0.00

B.   0.50

C.   0.25

D.   0.75