In the parking lot below me, 40% of the vehicles are silver, and about 25% of the vehicles are pickup trucks. To estimate that probability that the next vehicle to leave the parking lot will be a silver pickup, we first need to

a. assume that the color and the type of vehicle are mutually exclusive.

b. assume that the color and the type of vehicle are independent.

c. assume that the color and the type of vehicle are exhaustive.

d. simply multiply the two probabilities.