Question 9 0 I 1 point Suppose a firm's production technology is given as q=LK. The wage rate is $10 and the price of capital is $20. Which combination of labour and capitai is the cost minimizing way to produce 1,800 units of output? It J '= a) 30 units of capital and 60 units of labour 3' .0; b) 10 units of capital and 20 units of labour ' c) 100 units of capital and 18 units of labour _ ' d) 20 units of capital and 90 units of labour