Sentence Correction (SC) | By 1940, the pilot Jacqueline Cochran held seventeen official national

By 1940, the pilot Jacqueline Cochran held seventeen official national and international speed records, and she earned them at a time when aviation was still so new for many of the planes she flew to be of dangerously experimental design.


(A) and she earned them at a time when aviation was still so new for many of the planes she flew to be

(B) earning them at a time that aviation was still so new for many of the planes she flew were

(C) earning these at a time where aviation was still so new
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