The account found that L & L Energy's stock price is at $12.44. The time value on the January $12.50 call was bid at $1.15.
So the account bought back the Dec $10.00 call it owned (for a 2% profit) and sold the Jan 11 $12.50 call for $1.15.
This brings the cost basis of the LLEN stock to $10.95. This was compiled by taking the stock purchase cost $9.79 per share plus the purchase of the previous call at $2.65 minus the call revenue recieved from the Dec $10 call of $0.40 and the Jan 11 $12.50 call of $1.00. These amounts are after commissions are considered.