What is the probability that a seed from a parent plant of genotype Rr will carry the r gene?

A. 1

B. 1/2

C. 1/4

D. 0

The parent will carry over the gene no matter what but to make it show there needs to be rr not just Rr because the R is dominant and will show but the r is the weaker one so there has to be two so I say B

B. 1/2

I hope this is right!