The incomplete Punnett square here shows only one portion of the predicted outcomes for a cross between two pea plants, each one
heterozygous for the characteristic of round coat (R- dominant) and
wrinkled coat (r-recessive).

Of the other three empty portions of the Punnett square, how many
will be filled in by offspring with a wrinkled seed coat?
A
Zero
00
One
С
Two
D
Three