In Mountain Rabbits,the EL-1 Gene Is Located on Chromosome 3 $\underline{\text{ single cross }}$

Multiple Choice

In mountain rabbits,the EL-1 gene is located on chromosome 3.Four alleles of this gene have been identified in the population.With respect to EL-1,what is the maximum number of genotypes in the progeny of a $\underline{\text{ single cross }}$ between two mountain rabbits?

A) 1
B) 2
C) 3
D) 4
E) 6