Cost function of manufactuting 'x' units of some commodity is given as Clx) = 5x + 4:/x + 3. (in dollars). Weekly production of the commodity at 't weeks from the present is given by x = 4700 +100t. How fast the costs are rising when t = 2 ? O none of the given options O $506 per week approximately. O $5 per week approximately. O $503 per week approximately.