Here's a problem to solve: In pea plants, the trait for round seeds is dominant over the trait for wrinkled seeds. If a pure dominant plant with round seeds is crossed with a plant with wrinkled seeds, what can be predicted about the offspring plants?

Among the 4 following options, which is the correct answer?

- A: They will always produce round seeds.
 
- B: They will only produce wrinkled seeds.
 
- C: Each offspring plant will have some round and some wrinkled seeds.
 
- D: Unless the plant with wrinkled seeds was pure recessive, no prediction can be made.
 