Determine whether the random variable is discrete or continuous. In each case, state the possible values of the random variable. (a) The number of customers arriving at a bank between noon and 1:00 P.M.. (b) The amount of rain in City B during April. (a) Is the number of customers arriving at a bank between noon and 1:00 P.M. discrete or continuous? O A. The random variable is continuous. The possible values are x20. O B. The random variable is continuous. The possible values are x= 0, 1, 2,... O C. The random variable is discrete. The possible values are x = 0, 1, 2,... O D. The random variable is discrete. The possible values are x20. (b) Is the amount of rain in City B during April discrete or continuous? A. The random variable is continuous. The possible values are r= 1, 2, 3, .... B. The random variable is discrete. The possible values are r= 1, 2, 3, .... O C. The random variable is continuous. The possible values are r20. O D. The random variable is discrete. The possible values are r20.