Conversion of glucose 6-P requires ATP. Yet critically ill patients are given glucose solution intravenously instead of glucose 6-P. The reason for not giving glucose 6-P directly is
A. Glucose 6-P is degraded very fast in the blood before it enters the cells
B. Commercial preparation of glucose 6-P is always contaminated with toxic chemicals
C. High cost of glucose 6-P
D. Cells cannot take up glucose 6-P.