Question 12
Based on the above data, answer the given subquestions.
Let A denote the matrix of the linear transformation T with respect to standard bases for both the domain and the codomain. Choose the correct statement from the following. (In the options below, REF is used for row echelon form, and RREF is used for reduced row echelon form.)
A is in REF and RREF.
A is neither in RREF nor in REF.
A is in RREF, but not in REF.
A is in REF, but not in RREF.