a and b are natural numbers. The diameter of cell a is 2.3 , and the diameter of cell b is 2.3 . Which is a true statement? A. If a = 4 and b = 6, then cell a is 100 times greater than cell b. B. If a = 4 and b = 6, then cell b is 100 times greater than cell a. C. If a = 4 and b = 6, then cell a is 2 times greater than cell b. D. If a = 4 and b = 6, then cell b is 2 times greater than cell a.