Fields Tech School decides to expand and open a new campus in another state. Rather than acquiring land and building new buildings, the school board decides to merge with an existing school, Fennelstate, which has similar programs in the other state. Fennelstate is a small commuter school with the majority of the students from the same state. The merger between Fields Tech School and Fennelstate is best described as a $\_\_\_\_\_\_\_\_\_\_$ merger.

Group of answer choices

vertical

geographic extension

product extension

horizontal

freeze$-$out