Student or Learner
If we had taken such measures much earlier, the river _____ so seriously now.
A. would not be polluted B. would not have been polluted
The given answer is B. But I wonder if A is also right.
Thank you in advance.
The only possible sentence is "....the river would not be polluted now" (both "would not be" and "now" are in the present).
I agree that a) is the correct answer; it's a mixed conditional for a past action (or inaction- not taking measures) with a present result (pollution).