MHT CET Chemistry question

The cells reaction of the galvanic cell \mathrm{Cu_{(s)}|Cu^{2+}_{(aq)}||Hg^{2+}_{(aq)}|Hg_{(l)}} is

• (A)\mathrm{Hg + Cu^{2+} \rightarrow Hg^{2+} + Cu}
• (B)\mathrm{Hg + Cu^{2+} \rightarrow Cu^+ + Hg^+}
• (C)\mathrm{Cu^+ + Hg \rightarrow Cu + Hg^{+2}}
• (D)\mathrm{Cu + Hg^{2+} \rightarrow Cu^{2+} + Hg}Correct