Read the sentence given below to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. The corresponding letter of that part is the answer. If the sentence is error-free then, choose “No Error” as the answer. (Ignore the errors of punctuation, if any.)

The geography teacher wanted (A)/to show the immensity of Asia by having(B)/ his students draw the continent (C)/ in comparison to the other continents (D).