For the cell prepared from electrode A and B: Electrode `A:Cr_2O_7^(2-)|Cr^(3+),E_(red)^@ =+1.33 V` and Electrode `B:Fe^(3+)`/`Fe^(2+),E_(red)^@=0.77 V.`Which of the following statements are correct :

Options

A. The electrons will flow from B to A when connection are made
B. The emf of the cell will be 0.56V
C. A will be positive electrode.
D. All of these

Answer

D