Assertion: An object is weightless when it is in free fall and this phenomenon is called weightlessness.
Reason: In free fall, there is upward force acting on the object.
Options:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false and R is also false.