answer ASAP

From its last worker hired, a firm had additional production of 6 units at a wage rate of $18/ hr. For the last piece of capital utilized, they received an additional 10 units, with a rental rate of $50/hr. Which is correct regarding the firm? (The production function is Cobb-Douglas) 0 They should use more workers and less capital 0 They should only use capital and no workers 0 They are using the correct amount of workers and capital 0 They should use more capital and fewer workers 0 We cannot determine