Select the correct answer.
Consider the function represented by this graph.
A radical function on a coordinate plane passes through (minus 7, 3.5), (minus 3, 1), (8, minus 0.2) and also intercepts the x-axis at 4 units and the y-axis at 0.5 units.

Which word or phrase describes the value of the function over the interval ?
A.
increasing to decreasing
B.
decreasing
C.
increasing
D.
constant