Which of the following is a continuous random variable?

A) The number of employees of an automobile company.
B) The amount of milk produced by a cow in one 24-hour period.
C) The number of gallons of milk sold at Albertson's grocery store last week.
D) None of these choices.

A) The number of employees is a discrete random variable since it can only take on whole number values.
B) The amount of milk produced by a cow can take on any value between 0 and some upper limit, making it a continuous random variable.
C) Similar to A, the number of gallons sold is a discrete random variable since it can only take on whole number values.
D) None of the options are inadequate, but B is the only comprehensive choice.