Assertion (A): A PAN (Personal Area Network) is established within the vicinity of a room (20 to 30 sq.ft.) for sharing information with the computers.

Reasoning (R): A WAN (Wide Area Network) spans thousands of kilometres and is used to establish connectivity across several countries and continents.

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
PANs (Personal Area Networks) are small networks used to establish communication between a computer and other devices in proximity, typically up to 10 meters (20 to 30 sq.ft.). On the other hand, a WAN (Wide Area Network) spans a large geographical area across countries and continents. A WAN can cover an area with a radius spanning hundreds of kilometers.