A manufacturer produces two types of products, 1 and 2, at production levels of x1 and x2 respectively. The profit is given is 2x1 + 5x2. The production constraints are
x1 + 3x2 $\leq$ 40
3x1 3x2 $\leq$ 24
x1 + x2 $\leq$ 10
x1 > 0, x2 $\leq$ 0
The maximum profit which can meet the constraints is
(a) 29 (b) 28 (c) 44 (d) 75