Assertion (A): A Join is a query that combines rows from two or more tables.

Reasoning (R): Equi-joins are joins based on equality conditions.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Both A and R are true but R is not the correct explanation of A.

Explanation
An SQL JOIN clause is used to combine rows from two or more tables based on a common field between them. An Equi join is a simple SQL join condition that uses the equal sign (=) as a comparison operator to define a relationship between two tables based on a common field.