Choose the correct answer from the list below. Not all of the answers will be used.
-____________: This essential nutrient is required for the carboxylation of pyruvate in humans.

A)liver
B)muscle
C)one day
D)endoplasmic reticulum
E)gluconeogenesis
F)phosphoenolpyruvate carboxykinase
G)PFK2
H)Cori
I)fructose 2,6-bisphosphate
J)magnesium
K)oxaloacetate
L)biotin
M)2 hours
N)ATP