A alone: 4 goals in second half, but no info on total opponent goals in first half → insufficient.
B alone: Opponent scored 4 total, but no info on Mahindra’s goals → insufficient.
Together: Trailing by 3 at half-time means opponent had 3 more. If opponent total = 4, then first-half opponent goals = 3 or 4. Using A, second-half Mahindra scored 4 → can deduce final score and determine win/loss.