Assertion (A): Primary memory is the main memory inside computer that holds data, programs and instructions that are currently in use.

Reasoning (R): Secondary memory is used for permanent storage of data for future use.

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.

Assertion (A): Cache memory is placed between CPU and main memory (RAM).

Reasoning (R): Cache memory stores frequently used data and instructions so that they are immediately available to the CPU.

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.

Assertion (A): Operating system is the most important utility software.

Reasoning (R): Utility Software are essential for maintenance and configuration of the computer system.

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.

Assertion (A): Operating system acts as an interface between a user and computer hardware.

Reasoning (R): Operating system manages all the resources of a computer.

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.