Using the Notation C = Continuous and D = Discrete

Using the notation C = continuous and D = discrete, indicate whether each of the
following random variables is discrete or continuous.
a) The number of defective lights in a school's main hallway on a randomly selected
day
b) The barometric pressure at midnight in a particular location in Iowa on a randomly
selected day
c) The number of staples left in a stapler at a randomly selected time
d) The number of sentences in a short story selected at random from a collection of
short stories
e) The oven temperature at a randomly selected time during the cooking of a turkey