A recent study has found that within the past few years, many doctors had elected early retirement rather than face the threats of lawsuits and the rising costs of malpractice insurance.
(A) had elected early retirement rather than face
(B) had elected early retirement instead of facing
(C) have elected retiring early instead of facing
(D) have elected to retire early rather than facing
(E) have elected to retire early rather than face
OG (verbal review, 2nd ed.) says that the doctors have chosen x rather than y - the x and the y must be parallel and correct answer is E. Why not C? Any help appreciated.