Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
Joe has finished his first-aid course. He proves extremely helpful as a rescue worker.
A. Although Joe proves extremely helpful as a rescue worker, he hasn’t finished his first-aid course.
B. Having finished his first-aid course, Joe proves extremely helpful as a rescue worker.
C. Without finishing his first-aid course, Joe proves extremely helpful as a rescue worker.
D. However helpful Joe proves as a rescue worker, he hasn’t finished his first-aid course.