A company uses 4 pounds of resource 1 to make each unit of X1 and 3 pounds of resource 1 to make each unit of X2. There are only 150 pounds of resource 1 available. Which of the following constraints reflects the relationship between X1, X2 and resource 1? a) 4X, +3X2 ge 150 b) 4X,+3X2 le 150 c) 4 X, + 3 X2 = 150 d) 4X1 le 150