Match the items in Column I and Column II. Column I

Match the items in Column I and Column II.

Column I	Column II
P. Metallic Chills	1. Support for the core
Q. Metallic Chaplets	2. Reservoir of the molten metal
R. Riser	3. Control cooling of critical sections
S. Exothermic Padding	4. Progressive solidification

1. P–1, Q–3, R–2, S–4
2. P–1, Q–4, R–2, S–3
3. P–3, Q–4, R–2, S–1
4. P–4, Q–1, R–2, S–3

P – 4, Q – 1, R –2, S –3