Kiely's firm faces the following production function: Q-5-L2 K2, where Q is the amount of products produced by the firm, L is the number of hours of labour employed, and K is the amount of capital utilized by the firm. How many products are produced if the firm uses 4 hours of labour and 4 units of capital? Number How many products are produced if the firm uses 49 hours of labour and 49 units of capital? Number The firm displays O Constant Increasing None of the above All of the above Decreasing retums to scale.