In each question given below, there is a sentence which has been divided into five parts. One of these parts is not grammatically correct and needs a correction. Read the sentence carefully and mark the option with the part of the sentence that contains an error Neither the opposition leaders nor the ruling party (a) / has agreed to the amendments proposed in the bill (b) / which have already sparked intense debates in parliament (c) / and has polarized opinions among different political factions (d) / since it was introduced last month (e) /.