Which of the Following Best Describes a Discrete Random Variable

Short Answer

Which of the following best describes a discrete random variable? $\begin{array}{|l|l|}\hline A&\text {A random variable that can only assume a countable number of values. }\\\hline B&\text {A random variable that can only assume an uncountable number of values. }\\\hline C&\text { All random variable are discrete random variables}\\\hline D&\text { None of these choices are correct}\\\hline \end{array}$