In the given question, four words are printed in bold and are numbered A, B, C, and D. Of these, the positions of two of these words may be incorrect and need to be exchanged to make the sentence correct. Find the two words which need to be exchanged. In case the given sentence is correct, your answer is (E), i.e., 'No correction required.

Since the stable (A) of capital flows in 1991, India has always faced a current account deficit (B) but inflows of capital have allowed (C) the country to have a liberalization (D) balance of payments (BoP).