Stan and Samantha Are the Proud Parents of Three Little

Stan and Samantha are the proud parents of three little girls.They decide to have one more child because it seems like they are due to have a boy.Stan and Samantha think that most families have both boys and girls therefore they figure the probability the next child will be a boy is high.Stan and Samantha:

A) are correct,since the odds of each sex are 50-50,they are due for a boy
B) have confused representativeness with probability
C) have confused availability with probability
D) are generating an algorithm to solve their problem to have a boy