The number of new homes constructed in the United States last year is

[quote="mayursurya"]The number of new homes constructed in the United States last year is down almost 15 percent from the number of new homes constructed during the previous year. We can conclude that housing construction is on a downward trend and the number of homes built will continue to decline.

Which of the following, if true, most seriously weakens the conclusion above?

A. The housing figures are computed using a representative sample of home builders across the United States and not by calculating the exact number of homes constructed.(contender)
B. Last year much of the United States saw unseasonably poor weather throughout the entire summer, which is the prime housing construction season.(it provides the reason for the decline but doesn't weaken)
C. Home builders tend to leave the industry if the number of homes constructed declines more than 15 percent over the previous year's total, leading to a further drop in houses constructed.(strengthen the argument)
D. The 15 percent drop is the largest such decline in five years.(restate the drop,not a weakner)
E. State government incentives are known to have an effect on the number of houses that are constructed in any given year.(it provides a factor responsible for construction of houses)

Choice A says that housing figures are determined by home builders rather than by construction of homes.so on the basis of 15% decline in construction of home we can't conclude that no of new homes will continue to decline.

Choice A

Please correct if I am wrong.
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