Sonika is working with the circuit shown in the following figure :
The circuit has two gaps: X and Y. She has wires of five different materials - I, II, III, IV and V. She knows that the bulb will light up only when both gaps are filled with conducting materials.
She records her observations in a table. After completing the experiment, ink fell on the paper and she lost entries in row 3.
| No. | Material in X | Material in Y | Bulb (On/Off) |
| 1 | I | II | Off |
| 2 | I | IV | On |
| 3 | | | Off |
| 4 | III | V | On |
Based on the rest of the information in the table, out of the following what could be the materials in row 3 ?