Consider the following linear program:

MIN Z = 50A + 60B

s.t. 6A + 8B 240

14A + 7B 196

A 10

B 8

Which of the following option is not a feasible solution?

1. A-20 B=10
2. A=15 B=20
3. A=15 B=8
4. A=10 B=8