Assertion : The drift velocity of electrons in a metallic wire will decrease, if the temperature of the wire is increased.
Reason : On increasing temperature, conductivity of metallic wire decreases.
a. Both (A) and (R) are true and (R) is the correct explanation of A
b. (A) is true but (R) is false
c. Both (A) and (R) are true but (R) is not the correct explanation of A.
d. (A) is false but (R) is true