gwd 1-31怎么看都觉得我对

Q31:

Which of the following most logically completes the argument
below?

Davison
            River farmers are
currently deciding between planting winter wheat this fall or spring wheat next
spring.  Winter wheat and spring wheat
are usually about equally profitable. 
Because of new government restrictions on the use of Davison
            River
water for irrigation, per acre yields for winter wheat, though not for spring
wheat, would be much lower than average. 
Therefore, planting spring wheat will be more profitable than planting
winter wheat, since‗‗‗‗‗‗.

1. the
        smaller-than-average size of a winter wheat harvest this year would not be
        compensated for by higher winter wheat prices
2. new
        crops of spring wheat must be planted earlier than the time at which
        standing crops of winter wheat are ready to be harvested
3. the
        spring wheat that farmers in the Davison
                   River
        region plant is well adapted to the soil of the region
4. spring
        wheat has uses that are different from those of winter wheat
5. planting spring wheat is
        more profitable than planting certain other crops, such as rye

The solution is A.

What is your question?