In each question below, two sentences or parts of sentences are given with two blank spaces between them. From among the three parts/sentences given below, pick two which can fill up the blanks to meaningfully complete the sentence.
Four years ago, I had a major surgery. (___). (___). I was too ill.
(A) It left me disabled.
(B) My attempts to go back to work could not succeed.
(C) I had fully recovered except for some minor weakness.