Some Natural Phenomena

Consider the list of terms given below:
(i) Seismic Zone (iii) Mantle
(ii) Fault Zone (iv) Inner Core
The boundaries of the earth’s plate are known as
(a) (i) & (ii) (c) (iii) & (iv)
(b) (i) & (iii) (d) (ii), (iii) & (iv)