Over the last several decades, the demand for Country Y’s automobiles increased in Country X, but demand for Country X’s automobiles in Country Y has remained stagnant. Despite the successful attempts by County X’s manufacturers to close the gap in technology so that the automobiles from each country are now equivalent to each other in this respect, Country X’s manufacturers fail to acknowledge that drivers in Country Y drive on the left side of the road. Clearly, to help lessen this trade imbalance, Country X manufacturers should produce more cars with right-side steering wheels.

Which of the following is an assumption made by the argument?     

Reversing the trade imbalance requires making cars with right-side steering wheels.     
If Country X makes automobiles with right-side steering wheels, most consumers from Country Y will choose to purchase a car from Country X.     
If consumers from Country Y drive on the left side of the road, these consumers are less inclined to buy steering wheels found on the left-side of the car.     
The fuel efficiency and maintenance costs of cars from Country X will continue to improve.     
The government of Country Y requires all its citizens to purchase cars with right-side steering wheels.