Observe the given figure carefully and choose the incorrect statement(s).
1. Large volume of acid should be added to a small volume of water slowly.
2. The figure represents the process of concentrating dilute H2SO4.
3. The process involves release of a large amount of heat.
4. Water should not be stirred.
A 1 and 4 only
B 2 and 3 only
C 1, 2 and 4 only
D 2 only