I HAD A RED PEN BUT I SEEM TO HAVE LOST IT; I THINK I’D BETTER BUY ___...

150: - 600 CAU TRAC NGHIEM TIENG ANH
600 CAU TRAC NGHIEM TIENG ANH
150: I had a red pen but I seem to have lost it; I think I’d better buy _________ one.A. another B. the C. the other D. other