Glucose Molecules Produced During Photosynthesis Contain Higher Levels of Carbon-12

Multiple Choice

Glucose molecules produced during photosynthesis contain higher levels of carbon-12 than carbon -13 because

A) carbon -12 reacts slightly slower than carbon-13.
B) carbon-12 has more electrons than carbon -13.
C) carbon-12 reacts slightly faster than carbon-13.
D) carbon-13 has more number of protons than carbon -12.