A. 1.66X1010-24 amu
B. 1.67X1010-24 g
C. 1.66X1010-23 amu
D. 1.66X1010-24 kg

Brief Facts About One amu mass unit:

The atomic unit mass is symbolized as amu. 1 amu = Average of the proton rest mass and the neutron rest mass. 1 amu = 1.67377 x 10 -27 kilogram or 1.67377 x 10 -24 gram.