11. 4 equal parts of a line segment

The line segment $MN$with its end-points $M($14, 18$)$ and $N($70, 90$)$. If the points $A(x_1$, $y_1)$, $B(x_2$, $y_2)$ and $C(x_3$, $y_3)$ divide the line segment into $4$ equal parts, find the value of $A$, $B$ and $C$.

 

 

$A =$ $($, $)$

 

$B =$ $($, $)$

 

$C =$ $($, $)$