A black male guinea pig mates with a white female guinea pig, and the female gives birth to four offspring. Three of the offspring are black, and one is white. Which of the following best explains how one offspring was born with white fur? A. The allele for black fur is dominant.
B. The father carried one allele for white fur.
C. The allele for white fur is recessive.
D. The mother carried one allele for black fur.