A(3,-1),B(1,3),C(2,4) are vertices of ∆ABC, if D is centroid of ∆ABC and P is point of intersection of lines x+3y-1=0 and 3x-y+1=0 then which of the following points lies on line joining D and P. A)(-9,-7),
B(-9,-6),
C(9,6),
D(9,-6)
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