Suppose we have four colleges (A-D) and four students (1-4), with the following preferences: A: 1234 1: DBCA B: 2143 2: ADBC C: 1324 3: ABCD D: 2134 4: DCAB Which of the following is the stable matching obtained using the Gale- Shapley algorithm with the colleges proposing? Select one: O a. (D, 1) (A, 2) (C, 3) (B, 4) O b. (A, 1) (B, 2) (C, 3) (D, 4) O C. (D, 1) (A, 3) (B, 2), (C, 4) O d. (D, 1) (A, 2) (B, 3), (C, 4)