Answer: Option (A) is correct.
Step-by-step explanation:
U.S firms sell electric fans = $25 each
Before imposition of 30% tariff,
Imported price of electric fans from China = $19 each
Imported price of electric fans from Canada = $20 each
All the three countries are producing identical electric fans.
After imposition of 30% tariff,
Imported price of electric fans from China = $24.7 each (tariff of $5.7)
Imported price of electric fans from Canada = $26 each (tariff of $6)
∴ U.S will import fans from China because China has the lower price of electric fans as compared to United States and Canada after imposition of 30% tariff.