If there are three consecutive even numbers, and the smallest one is a, then the average of the three numbers is expressed as () A. aB. 2aC. a+2D. 3a+4

If there are three consecutive even numbers, and the smallest one is a, then the average of the three numbers is expressed as () A. aB. 2aC. a+2D. 3a+4

(a + A + 2 + A + 4) 3 = (3a + 6) 3 = a + 2, so C