Given `E_(Ag^(+)//Ag)^(@) = +0.8V` , `E_(Ni^(+2)//Ni)^(@) = -0.25V`. Which of the folowing statements is true?
A. `Ag^(+)` is an oxidizing agent but `Ni^(+2)` is a reducing agent.
B. `Ni^(+2)` can be reduced by silver metal
C. `Ag^(+)` is a better oxidizing agent than `Ni^(2+)` and Ni is a better reducing agent than Ag.
D. `Ni^(+2)` is a better oxidizing agent than `Ag^(+)` and Ag is a better reducing agent than Ni.
