Mashaal Masha
$y\leq 3x+1$

$x-y>1$

Which of the following ordered pairs $(x,y)$ satisfies the system of inequalities above?
Difficulty: Medium
A: 

$(-2,-1)$

B: 

$(-1,3)$

C: 

$(1,5)$

D: 

$(2,-1)$

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