Choose the Correct Answer from the List Below

Choose the correct answer from the list below. Not all of the answers will be used.
-____________ is the principle carbohydrate in living systems.

A) obligate anaerobes
B) AMP
C) pyruvate
D) NAD⁺
E) glucose
F) UDP-glucose
G) GLUT5
H) facultative anaerobes
I) ATP
J) magnesium
K) galactokinase
L) GLUT2
M) galactose isomerase