og 16 比较问题求教！

16. A surge in new home sales and a drop in weekly unemployment claims suggest that the economy might not be as weak as some analysts previously thought.

(A) claims suggest that the economy might not be as weak as some analysts previously thought

(B) claims suggests that the economy might not be so weak as some analysts have previously thought

(C) claims suggest that the economy might not be as weak as have been previously thought by some analysts

A选项中的从句中 是那两者在比较？some analysts previously thought和谁在比？做什么成分？