HELP ASAP What is the reactant of lactic acid fermentation and the product that builds up during exercise?

A) oxygen and lactic acid
B) carbon dioxide and water
C) Glucose and other compounds
D) glucose and lactic acid

gotta be D or A but D is more reasonable

The correct answer would be A. The agent of metamorphism that would cause for the overall composition of a rock to change would be hydrothermal solutions. These solutions contain mineral substances that are dissolved in the hot water. When in contact with a rock, the minerals may change the composition of the rock.