9) Suppose a smog check company allows up to 3 free retests before a customer would have to pay again. Let X= number of RETESTS a customer uses. Below is a probability distribution for X the company has produced from previous data. X 0 1 2 3 P(X) .15 .05 .04 Question A: Fill in the missing probability. 0 .24 .76 .61 Question B: What is the expected number of retests a customer will use? 0 0.37 .75 1 Question C: What's the probability a customer will not use all 3 retests? .96 .04 .2 .76