[单选题]
How does the mass of t6 8ew;i 0)cisfp ud*johjnbh2t9, v zjz9 broyln58e f9 )lu,/ne products of a nuclear fusion reaction compare to the mass of t2f oj l99 un)/nvh5ljnbrt b,ez9yz 8,he original elements?
A. greater
B. less
C. the same
D. varies according to the reaction
