In a particular plant, two genes control leaf shape and color. Round leaves (R) are dominant to jagged leaves (r). Yellow fruits (Y) are dominant to white fruits (y). A true-breeding round-leaved, yellow-fruited plant is mated with a true-breeding jagged-leaved, white-fruited plant. What are the genotypes of the plants involved in this cross?

a. RrYy × RrYy
b. RRYY × rryy
c. RRYY × RRYY
d. cannot determine from the information given