There are 15 chips numbered from 1 to 15 in a bag. A chip is drawn at random from the bag. Let A be the event that the number is multiple of 3, B be the event that the number is odd. Find A ∩ B.
A) {3, 9, 15}  

B). {3, 6, 9} 

C) {3, 6, 12} 

D) {3, 7, 11}