iF it wErE DisCovErED thAt thE import DollAr Amount shown For 1978 wAs inCorrECt AnD shoulD hAvE BEEn $5.3 Billion instEAD，thEn thE AvErAgE(ArithmEtiC mEAn)import DollAr Amount pEr yEAr For thE 17 yEArs woulD BE how muCh lEss
A、$100 million
B、$53 million
C、$47 million
D、$17 million
E、$7million