Read the following statements:
`S_(1)` : An object shall weight the same at pole and equator when weighed by using a physical balance.
`S_(2)` : If shall weight the same at pole and equator when weighed by using a physical balance.
`S_(3)` : If shall weight the same at pole and equator when weighed by using a spring balance.
`S_(4)` : If shall weight the same at pole and equator when weighed by using a spring balance.
Which of the above statements is/are correct ?
A. `S_(1)` and `S_(2)`
B. `S_(1)` and `S_(4)`
C. `S_(2)` and `S_(3)`
D. `S_(2)` and `S_(4)`