Match the following types of signs with their board shapes as per IRC 67:
| A | Regulatory sign | i | Triangular shape |
| B | Informatory sign | ii | Circular shape |
| C | Warning sign | iii | Rectangular shape |
1
A - ii, B - i, C - iii
2
A - ii, B - iii, C - i
3
A - iii, B - i, C - ii
4
A - i, B - ii, C - iii