A census collected data on everyone that lived in a certain small town. The random variable X is the number of girls out of four children born to a randomly selected couple in that town. Its probability distribution is shown below. Complete parts a through c. X O 1 2 3 4 P(X=x)|0.0685/0.2829 /0.3728/0.2391/0.0367 a. Find and interpret the mean of the random variable. H=(Round to four decimal places as needed.) Interpret the mean. Select the correct choice below and fill in the answer box to complete your choice. (Round to four decimal places as needed.) A. The mean number of children in a family with four girls is B. The mean number of girls in a family is C. The mean number of girls in a family with four children is