Pick out the correct sentence from the following sentences.

Putting the word 'not' between 'to' and 'perform' creates a split infinitive. In essence, the formal usage requires us to write 'not to perform' instead of 'to not perform'. In option C, 'did not decided' is incorrect and it should have been 'did not decide'. In option D, 'he decide' is erroneous as 'he', being a singular pronoun, should be followed by 'decides'.  Out of options A and B, B is more suitable for the reasons discussed above. Option B is the correct answer.