On July 1, 2020, an interest payment date, $180,000 (par value) of Lusaka Corp. bonds were converted into 3,600 of their no par common shares. At this time, the unamortized discount on the bonds was $7,200. When the bonds were originally issued, the equity portion of the bond was valued at $1,700. Using the book value method, Lusaka would record

an $172,800 increase in Common Shares.

an $174,500 increase in Common Shares.

an $171,100 increase in Common Shares.

no change to Contributed Surplus.