A national caterer determined that 87% of the people who sampled their food said that it was delicious. A random sample of 144 people is obtained from a population of 5000. The 144 people are asked to sample the caterer's food. If p is the sample proportion saying that the food is delicious, what is the mean of the sampling distribution of p? A) 0.42 B) 0.19 C) 1.25 D) 0.87