The types of mammalian nerve fibers (Column X) and the conduction velocity in m/s of nerve impulses (column Y) are listed below:
| Column X | Column Y | ||
| a | Aa | i | 12-30 |
| b | B | ii | 30-70 |
| c | Aδ | iii | 70-120 |
| d | Aβ | iv | 3-15 |
Which one of the following options represents correct match between Column X and Column Y?
1
a - i, b - ii, c - iii, d - iv
2
a - ii, b - iii, c - iv, d - i
3
a - iii, b - iv, c - i, d - ii
4
a - iv, b - i, c - ii, d - iii