Which one of the following statements is correct ?

Options

A. 1. In nuclear fission , energy is released by fusion two nculei of medium mass (approximately 100 amu)
B. 2. The rest mass of a stable nucleus is equal to the sum of the rest masses at its separated nucleons
C. 3. In nuclear fission , energy is released by fragmentation of a very heavy nucleus
D. 4. The rest mass of a stable nucleus is greater than the sum of rest masses of its separated nucleons

Answer

C

Explanation

(a), (b) ,(d) are wrong . Only (c ) is correct .