【单选题】
Onepervasivetheoryexplainstheintroductionofbreakfastcerealsintheearly1900sasaresultofthegrowingnumberofautomobiles,whichledtoadeclineinhorseownershipandasubsequentgrainglut;bypersuadingpeopletoeatwhathadpreviouslybeenhorsefeed,marketequilibriumwasrestored.（）
(A)bypersuadingpeopletoeatwhathadpreviouslybeenhorsefeed,marketequilibriumwasrestored
(B)persuadingpeopletoeatwhathadpreviouslybeenhorsefeedrestoredmarketequilibrium
(C)bypersuadingpeopletoeatwhathadpreviouslybeenhorsefeed,itrestoredmarketequilibrium
(D)thepersuasionofpeopletoeatwhathadpreviouslybeenhorsefeedrestoredmarketequilibrium
(E)marketequilibriumwasrestoredwhenpeoplewerepersuadedtoeatformerhorsefeed
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