In Sweet Peas,the Allele C Is Needed for Color Expression $\times$

Multiple Choice

In sweet peas,the allele C is needed for color expression (c results in white) .The precise color expressed is determined by the alleles R (red) and r (blue) .A cross between certain red and blue plants resulted in progeny as follows: 3/8 red,3/8 blue,1/4 white.What were the genotypes of the plants crossed?

A) \ C/c;R/r $\times$ C/C;R/R
B) C/c;R/r $\times$ C/c;R/r
C) C/c;R/r $\times$ C/c;r/r
D) C/c;R/r $\times$ c/c;R/r
E) C/c;r/r $\times$ C/C;R/r