Use the graphs below to answer the question.
Graph of line r. The line passes through points (−4,0) and (4,2). The slope is positive.
Graph of line s. The line passes through points (−4,5) and (4,−3). The slope is negative.
Graph of line t. The line passes through points (−4,−5) and (4,5). The slope is positive.
Graph of line u. The line is horizontal, passing through y=1. The slope is zero.
Which line shows a negative slope?
A. r
B. s
C. t
D. u