Direction: Spot the grammatical errors in the given sentence. Mark the part with error as your answer. If there is no error, mark "No error" as the answer. (Ignore punctuation error)

The band have been (a)/ performing at many cause oriented concerts. (b)/ to encourage people to come forward and (c)/ lend their support to the noble cause (d)/ No error (e)

[BANK OF BARODA (PO), 2011]