What Is the Shape of the Probability Density Function for a Uniform

Multiple Choice

What is the shape of the probability density function for a uniform random variable on the interval [ a ,  b ]?

A) A rectangle whose X values go from a to b .
B) A straight line whose height is 1 \( b - a ) over the range [ a , b ].
C) A continuous probability density function with the same value of f(x) from a to b .
D) All of these choices are true.