Which unit rate corresponds to the proportional relationship shown in the graph?

Drag and drop the answer into the box to match the graph with its unit rate.

A graph with a line running through coordinates left parenthesis 0 comma 0 right parenthesis and coordinates left parenthesis 12 comma 16 right parenthesis.

4/3 cm/s 1/4 cm/s 1/3 cm/s 3/4 cm/s