Solve the Following Integer LP Using Branch and Bound The Optimal Value of Z Is:
A) 7
B) 6

Solve the following integer LP using branch and bound:
$\begin{array} { l l } \text { MAX } & x _ { 1 } + 5 x _ { 2 } \\\text { subject to: } & x _ { 1 } + 10 x _ { 2 } \leq 20 \\& x _ { 1 } \leq 2 \\& x _ { 1 } , x _ { 2 } \geq 0 \text { and integer }\end{array}$
The optimal value of Z is:

A) 7
B) 6
C) 10
D) 11
E) 12