The atomic weight of an element is defined as

A.) the mass in g of 0.1 mol of the element

B.) the mass of one atom of the most abundant isotope of that element

C.) the sum of the masses of the protons, neutrons, and electrons

D.) the atomic number of the element multiplied by the mass of one carbon-12 atom

E.) the weight of 6.022 x 10^23 atoms of the element