Cu+ is not stable and undergoes disproportion. E for cu+ disproportionation.

(E° cu2+/cu =0.153V , E° cu+/cu=0.53V).

(a) +0.683 V

(b) -0.367 V

(c) +0.3415 V

(d) +0.367 V

I want th make a small correction to question

Its cu²⁺/cu⁺ =0.153V  i.e.,                     cu²⁺ + e^-   ------>  cu⁺            E⁰ = 0.153 V

Now going into problem

Cu+ solutions, tend to give a disproportion reaction:
2Cu⁺ ----- >   Cu + Cu²⁺

                       
                     cu⁺ + e^-    ------>  cu                                E⁰ = 0.53 V        so,  nE⁰ = 0.53 V    

                     cu⁺            ------>  cu²⁺ + e^-               E⁰ = - 0.153 V       so,  n E⁰ = - 0.153 V 

on adding above rxns we get   
 2Cu⁺ ----- >   Cu + Cu^{2+                  with}  E⁰ = +0.377 V   

^{Option is D}