Question 10 (1 point) The production function for a firm is given as, Q = AL" + KB, where A>0; a,B > 0; a + B = 1 This firm's technology displays: 1) Increasing returns to labour and decreasing returns to scale ( 2) Constant returns to labour and increasing returns to scale (3) Decreasing returns to labour and decreasing returns to scale ( 4) Decreasing returns to labour and constant returns to scale