Consider the following region in the three dimensional space.
X1+X2≥3
X1-3X3≤3
X1,X2,X3≥0
Which of the following functions are bounded in this region? Check ALL that apply.
A. X1+X2-X3
B. X1+3X2+6X3
C. 2X1-7X3
D. All these functions are unbounded.