# Basis maths-linear algebra-Q2

A  pivot position in a matrix is a location in that corresponds to a leading 1 in the reduced echelon form of . A pivot column is a column of that contains a pivot position.

Which of the following is the correct set of Pivot columns of above matrix (Assuming index of first column is 1)

(A). $1,2,3$

(B). $1,2,4$

(C). $1,2,5$

(D). $1,3,5$