The given sentence has been broken up into three different parts. The error, if any, will be in any one part of the sentence. Select the option which contains the part of the sentence which has an error (spelling, grammatical or contextual). If there is no error, choose option D.

Not only has the Prime Minister (A) / made a good decision of implementing a lockdown, but increased (B) / the motivation of the citizens. (C) / No error (D)