Assertion: Unit chosen for measuring physical quantities should not be easily reproducible.
Reason: Unit should change with the changing physical conditions like temperature, pressure, etc.
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.