Solve this:

20. The emf of the following three galvanic cells:

$$\begin{gathered} 1. \mathrm{Zn}/{\mathrm{Zn}}^{2-}\left(1\mathrm{M}\right)\parallel {\mathrm{Cu}}^{2+}\left(1\mathrm{M}\right)/\mathrm{Cu} 2. \mathrm{Zn}/{\mathrm{Zn}}^{2+}\left(1\mathrm{M}\right)\parallel {\mathrm{Cu}}^{2+}\left(1\mathrm{M}\right)/\mathrm{Cu} \\ 2. \mathrm{Zn}/{\mathrm{Zn}}^{2-}\left(1\mathrm{M}\right)\parallel {\mathrm{Cu}}^{2+}\left(0.1\mathrm{M}\right)/\mathrm{Cu} \end{gathered}$$
Are Represented by E_{1 ,}E_{2 ,}E₃ which of the following statement is true ?

(A) ​E₁>E₂>E₃        ​(B) ​E₃>E₂>E₁     (C) ​(B) ​E₃>E₁>E₂        ​(D) ​E₂>E₁>E₃