Uma das frases em negrito está incorreta. Identifique qual está incorreta:
Since September 11th, american scientists studied the health of search-and-rescue dogs that nosed through the debris at ground zero, but so far, they have found no signs of major illness in them.
A) nosed through
B) but so far
C) illness in them
D) studied the health
Acredito que seja a A. O que vocês acham?