Read each sentence to find out whether there is any grammatical error or idiomatic error in it. The error if any, will be in one part of the sentence. The ‘alphabet’ of that part is the answer. If there is ‘No Error’ then answer is ‘e’ (Ignore errors of punctuation if any).
Q. During planning your (a) / investments you must (b) / guarding against becoming (c)/ too conservative. (d) / No error. (e)