(15) 2 + 5 = 230 (14) 2 - 4 = 192 (13) 2 + 3 = 172 (12) 2 - 2 = 142 (11) 2 + 1 = 122 (10) 2 - 0 = 100

Question

What should come in place of the question mark (?) in the following number series?

230192 172 ? 122 100

A 129

B 115

C 126

D 142

E None of these

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