6. Which of the following is not a true statement concerning the gram atomic mass?
A. The gram atomic mass is 12 g for magnesium.
B. The gram atomic mass is the number of grams of an element that is numerically
equal to the atomic mass in amu
C. The gram atomic mass is the mass of one mole of atoms.
D. The gram atomic mass is the mass of 6.02 x 1023 atoms of any monatomic element

anyone?​