In Radishes, Red and White Are the Pure-Breeding Colors, and Long

Multiple Choice

In radishes, red and white are the pure-breeding colors, and long and round are the pure-breeding shapes, while the hybrids are purple and oval.The cross of a purple oval with a purple oval

A) is a cross between two pure-breeding forms.
B) is an example of a testcross.
C) produces only homozygous pure-breeding forms.
D) produces only heterozygous offspring.
E) none of these are true.