If the Sequence Is Geometric, Find the Common Ratio $0.61$ A) $2.5$

Multiple Choice

If the sequence is geometric, find the common ratio. If the sequence is not geometric, say so.
-24, 9.6, 3.84, 1.536, $0.61$

A) $2.5$
B) $- 0.4$
C) $0.4$
D) $0.61$