the atomic mass of the element niobium (Nb) is 92.906 amu. Which measurement is correct?

A. 1 mole of Nb = 92.906 grams
B. 1 gram of Nb = 92.906 moles
C. 1 gram of Nb = 92.906 atoms
D. 1 mole of Nb = 92.906 atoms