11. Which of the following statements is true about the linear transformation T: R² → R³ defined by T(x) = Ax? 1 -1 A = -2 2 0 *a) T is one-to-one but not onto. b) T is onto but not one-to-one. c) T is both one-to-one and onto. d) T is neither one-to-one nor onto.