Standard electrode potential for Sn4 / Sn2 couple is 0.15 V and that for the Cr3 / Cr couple is –0.74 V. These two couples in their standard state are connected to make a cell. The cell potential will be?

• A. +1.83 V
• B. +0.89 V
• C. +1.19 V
• D. +0.18 V