Which of the following most logically completes the argument below?
Papoose River farmers are deciding whether to plant winter wheat or spring wheat. The two types of wheat are usually about equally profitable and cannot both be grown in the same year. This year much lower yields per acre are expected for winter wheat because of new government restrictions on the use of Papoose River water for irrigation. Therefore, planting spring wheat will be more profitable than planting winter wheat, since _________. The argument says winter wheat will have much lower yields this year because irrigation water is restricted. Since winter wheat and spring wheat are usually equally profitable, the conclusion needs a reason why spring wheat will not suffer the same irrigation-related problem.
The key point is that spring wheat must be unaffected by the water restriction, or at least much less affected by it.
A. in the Papoose River region, spring wheat is not dependent on irrigation
This is correct. If spring wheat does not depend on irrigation, then the water restrictions that hurt winter wheat yields will not similarly hurt spring wheat. So spring wheat should be more profitable this year.
B. new crops of spring wheat must be planted before standing crops of winter wheat are ready to be harvested
This does not help. It explains why the two crops cannot both be grown in the same year, but not why spring wheat would be more profitable.
C. the spring wheat that farmers in the Papoose River region plant is well adapted to the soil of the region
This is too general. Spring wheat may be well adapted to the soil and still require irrigation, so this does not address the specific reason winter wheat yields will fall.
D. spring wheat has uses that are different from those of winter wheat
This is irrelevant. Different uses do not show that spring wheat will be more profitable this year.
E. planting spring wheat is more profitable than planting certain other crops, such as corn
This does not compare spring wheat with winter wheat, which is the comparison needed here.
Answer: (A)