Country A and country B are the same except country A currently has more capital. Assuming diminishing returns, if both countries increase their capital by 100 units and other factors that determine output are unchanged, then( )
选项：

A:output in country A increases by more than in country
B:b. output in country A increases by the same amount as in country
B:
C:output in country A increases by less than in country
B:
D:None of the above is necessarily correct.