1 point Let T be an linear transformation from R to Rs Let A be the matrix associated to T fill in the correct answer for each of the following situations 1 Two columns in the row echelon form of A are not pivot columns 2 The row echelon form of A has no column corresponding to a free variable 3 The row echelon form of A has a column corresponding to a free variable 4 Every column in the row echelon form of A is a pivot column A T is not one to one B T is one to one