The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct.If the sentence contains no error, select choice E.

Farmers who grow major crops such as corn, rice and wheat, aware that new developments in agricultural production can result in millions of dollars in additional revenue, switching to newer, more efficient technologies. No error.

(A) who grow
(B) aware
(C) swtiching
(D) more efficient
(E) No error

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