Imagine that you are performing a cross involving seed texture in garden pea plants. You cross true-breeding round and wrinkled parents to obtain F1 offspring. Which of the following experimental results in terms of numbers of plants are closest to what you expect in the F2 progeny?

a. 810 round seeds

b. 810 wrinkled seeds

c. 405:395 round seeds:wrinkled seeds

d. 610:190 round seeds:wrinkled seeds