Which of the following statements are true in context of deductions?

Deductions are allowed under the income tax act help us reduce our taxable income

We can avail the deductions only if we have made tax-saving investments or incurred eligible expenses. There are a number of deductions available under various sections that will bring down our taxable income

The most popular deductions are under section 80C, 800, 80E, 80G, 80DDB, etc. of Chapter VIA