Which of These Is Not an Arithmetic Sequence?
A) 3 $\frac{1}{3}, \frac{2}{3}, 1, \frac{4}{3}$

Multiple Choice

Which of these is not an arithmetic sequence?

A) 3, 6, 12, 24
B) 1, 3, 5, 7
C) -5, 2, 9, 16
D) $\frac{1}{3}, \frac{2}{3}, 1, \frac{4}{3}$