B
Below is a question with multiple-choice answers. Choose the correct option based on your reasoning.

### Question:
In snapdragon plants, red flowers are dominant to white flowers. When red-flowered plants are crossed with white-flowered plants, pink flowers are produced. If a researcher wants to produce plants with only white flowers, what color should the parent plants be?

### Choices:
A. both red
B. both white
C. one red and one white
D. one white and one pink

### Answer:
