The Arrows Drawn Perpendicularly to the Contour Lines on the Contour

Multiple Choice

The arrows drawn perpendicularly to the contour lines on the contour map shown indicate the direction of the groundwater flow. In this example the groundwater is:

A) flowing down the slope of the water table from higher contours to lower ones
B) flowing up the slope of the water table from lower contours to higher contours
C) flowing parallel to the slope of the water table from lower contours to higher contours