Graduation announcements at my old high school came in two color choices (Red or White), and three styles (Classic, Modern, or Budget). Write out the sample space for all of the combinations of color (R or W) and style (C, M, or B) that students could make.

a. {R, W, C, M, B}
b. {RC, RM, RB, WC, WM, WB}
c. {RW, CMB}
d. {RWCMB}