Diketahui A = {x | 4 < x <= 9,x bilangan asli} dan B = {x |

Diketahui A = {x | 4 < x <= 9,x bilangan asli} dan B = {x | 3 < x < 17, x bilangan prima}. Himpunan A U B adalah... A. {5, 6, 7, 8, 9, 11, 13} B. {5, 7} C. {6, 8, 9} D. {6, 8, 9, 11, 13}