【单选题】

Which of the following statements is NOT true
A．Today you can get calcium without eating any high-fat or high-calorie foods by choosing skim milk or low-fat yogurt.

B．Calcium plays an important role in the movement of protein and nutrients inside cells.
C．You can rely on pills instead of a calcium-rich diet to take enough calcium.
D．If you want to absorb calcium, you should expose yourself to the sun's rays.