Explain why the sample​ proportion, ​, is a random variable. What is the source of the​ variability? A. The sample proportion is a random variable because the value of varies from sample to sample. The variability is due to the fact that people may not be responding to the question truthfully. B. The sample proportion is a random variable because the value of represents a random person included in the sample. The variability is due to the fact that different people feel differently regarding their satisfaction. C. The sample proportion is a random variable because the value of represents a random person included in the sample. The variability is due to the fact that people may not be responding to the question truthfully. D. The sample proportion is a random variable because the value of varies from sample to sample. The variability is due to the fact that different people feel differently regarding their satisfaction.