Given below are two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R)
Assertion (A): The first ionization enthalpy of 3d series elements is more than that of group 2 metals
Reason (R): In 3d series of elements successive filling of d - orbitals takes place.
In the light of the above statements, choose the correct answer from the options given below
A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B (A) is true but (R) is false
C (A) is false but (R) is true
D Both (A) and (R) are true but (R) is not the correct explanation of (A)