Assertion: Work done by static friction may be positive. Reason: Static friction may act along the direction of motion of an object. Which of the following options is correct?
1) Both assertion and reason are true, and the reason is the correct explanation of the assertion.
2) Both assertion and reason are true, but the reason is not the correct explanation of the assertion.
3) Assertion is true, but the reason is false.
4) Assertion is false, but the reason is true.
