How to construct a vector from specific elements in a matrix

Given the matrix A = [3 4 7; 8 2 1; 6 0 9], how would I create a vector that is composed of the first row second column, second row third column and third row first column of matrix A (ie B = [4; 1; 6])

Answer 1

[Birdman]

 B=[A(1,2);A(2,3);A(3,1)]

Answer 2

[Stephen23]

With linear indexing:

B = A([4,8,3])