It shows the possibility of having either a male child, xy, or a female child, xx. the gordon family has four boys. mr. and mrs. gordon are hoping for a girl. what is the probability that the next child will be a girl? responses

a 1:4 or 25%1:4 or 25%
b 2:4 or 50%2:4 or 50%
c 3:4 or 75%3:4 or 75%
d 4:4 or 100%