(A)  they are potentially devastating for homeowners, whose

(B)  they can potentially devastate homeowners in that their

(C)  for homeowners they are potentially devastat­ing, because their

(D)  for homeowners, it is potentially devastating in that their

(E)  it can potentially devastate homeowners, whose

为什么OG的解释说 B D中in that they, in that their 是wordy and awkward ?