15. Which of the following systems represent the graph shown?
A) 2x + 3y < 6
     -x + y > -4
B) 2x + 3y _> 6
    -x + y _> -4 
C) x + y >_ 4
    2x - 3y <_ 6 
D) x + y > 4
    2x - 3y < 6 
                                             
                                          
                                          
                                        
											