The profit, in thousands of dollars, from the sale of x thousand candles can be estimated by P(x)=4x-0.5xInx Complete parts (a) through (c). P'(729)= (Type an integer or decimal rounded to the nearest thousandth as needed.) What does P'(729) represent? OA. The additional profit, in thousands of dollars, when 729,000 candles are sold OB. The additional cost, in thousands of dollars, to produce 729,000 candles. OC. The additional cost, in thousands of dollars, to produce a thousand candles once 729,000 candles have already been sold. OD. The additional profit, in thousands of dollars, for selling a thousand candles once 729,000 candles have