You roll a die with the sample space S = {1, 2, 3, 4, 5, 6}. You define A as {1, 2, 3}, B as {1, 2, 3, 5, 6}, C as {4, 6}, and D as {4, 5, 6}. Determine which of the following events are exhaustive and/or mutually exclusive.
a. A and B
b. A and C
c. A and D
d. B and C