Explanation:

• Equity means treating people based on their respective circumstances. So, every individual shall be helped as per their need and brought to the same level of development resulting in equality.
• Under principles of equity, only those individuals are helped who require that help. This means people are treated fairly as per their conditions, but differently.
• Everyone in the class will not be in the need of extra classes. So, only those students who are weak shall be given help. This ensures that only those students are given assistance who actually need it. Hence, this is a case of equity, not equality. Under equality, all students would be given extra classes.

Hence only statements 1&2 are correct.