What would have happened , as far as the river bank A) Bob had walked farther B) if Bob should walk farther C) if had Bob walked farther D) if Bob walked farther E) Bob would walked farther

What would have happened __A) Bob had walked farther__, as far as the river bank.

A) Bob had walked farther B) if Bob should walk farther C) if had Bob walked farther D) if Bob walked farther E) Bob would walked farther