Hello guys, can you please answer this question with explanation and formula because I'm absolutely lost :(

What is the Cu2+ concentration at 25°C in the cell Zn(s)½Zn2+(1.0 M)½½Cu2+(aq)½Cu(s)? The cell emf is 1.03 V. The standard cell emf is 1.10 V.

a. 2.4 M
b. 0.004 M
c. 1.0 M
d. 0.07 M
e. 0.1 M

Thanks in advance