Using the standard potential values given below, decide which of the statements P,Q,R,S are correct?
Choose the right answer from (a), (b), (c ) and (d).
`Fe^(2+) + 2e^(-) rightarrow Fe`, `E^(@) = -0.44V`
`Cu^(2+) + 2e^(-) rightarrow Cu`, `E^(@) = +0.34V`
`Ag^(+) + e^(-) rightarrow Ag`, `E^(@) = +0.80V`
(P) Copper can displace iron from `FeSO_(4)` solution
(Q) Iron can displace copper from `CuSO_(4)` solution
(S) Iron can displace silver from `AgNO_(3)` solution
A. P and Q
B. Q and R
C. Q and S
D. P and S
