Determine Whether the Sequence Is Geometric $1,-\frac{7}{2}, \frac{49}{4},-\frac{343}{8}, \frac{2401}{16},..$ A) $\frac{2}{7}$ B) -

Multiple Choice

Determine whether the sequence is geometric. If so, find the common ratio. $1,-\frac{7}{2}, \frac{49}{4},-\frac{343}{8}, \frac{2401}{16},..$

A) $\frac{2}{7}$
B) - $\frac{2}{7}$
C) $\frac{7}{2}$
D) - $\frac{7}{2}$
E) not geometric