If Set a Is a Set of First 5 Odd $\Omega$

Multiple Choice

If Set A is a set of first 5 odd numbers and Set B is a set of first 5 prime numbers. Find Set A $\Omega$ B.

A) {1,3,5,7,9}
B) {1,3,5,7,9,11}
C) {2,9,11}
D) {3,5,7}