The change in resistance of a metal wire owing to strain is due toS1: Change in dimension of wire expressed by factor (1-2µ)S2: Change in resistance ?

The change in resistance of a metal wire owing to strain is due toS1:

1.	The change in resistance of a metal wire owing to strain is due toS1: Change in dimension of wire expressed by factor (1-2µ)S2: Change in resistance ?
A.	S1 is true & S2 is false
B.	S2 is true & S1 is false
C.	Both S1 & S2 are true
D.	Both S1 & S2 are false
Answer» C. Both S1 & S2 are true