3. Which one of the following is an arithmetic sequence?

A. −2, 1, 4, 7, 10, . . .
B. 5, 0, −1, −3, −7, . . .
C. .35, .5, .85, 1.1, 1.22, . . .
D. 2, 3, 5, 7, 11, 13, 17, . . .