31. Match the acids given in Column (A) with their correct source given in Column (B)
| Column (A) | Column (B) |
|---|---|
| (a) Lactic acid | (i) Tomato |
| (b) Acetic acid | (ii) Lemon |
| (c) Citric acid | (iii) Vinegar |
| (d) Oxalic acid | (iv) Curd |
(a) — (iv)
(b) — (iii)
(c) — (ii)
(d) — (i)