Well, I think the model should have a percentage.
A.Well, the model should be paid in proportion to the price of the picture for which he has worked. B.Well, the model should be paid in proportion to the work he has done. C.Well, the model should be paid in proportion to the time he has spent doing the work. D.Well, the model should be paid in proportion to the average monthly earnings of the painter for whom he works.正确答案A