In the sentence given below, one/some parts have errors and others are correct. Find out which part has an error and mark it as your answer. If there is no error, mark ‘No error’ as your answer.

In such conditions, only the vegetative systems probably developed, and that too imperfectly, yet some have (A) / ventured to give names to isolated cells, or string of cells, or threads (B) / of mycelium, which really in themselves possess neither of the elements of correct (C) /  classification- the vegetative system, even being imperfect, and consequently the reproductive is absent. ( D) / No error (D)