Assertion (A): If an individual stands immobile for a long time, it leads to accumulation of fluids in the leg tissues and swelling in feet.
Reason (R): Contraction of muscles compresses the veins to move the blood inside them.
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. Both (A) and (R) are false.