If ‘N’ is the number of shafts used, then the total number of feces available for attacking the excavation and construction in tunnels are_________________________?
(A) 2N
(B) N + 2
(C) 2 N + 1
(D) 2 N + 2
If ‘N’ is the number of shafts used, then the total number of feces available for attacking the excavation and construction in tunnels are_________________________?
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