Two of Maxwell's Equations Contain a Path Integral on the Left

Multiple Choice

Two of Maxwell's equations contain a path integral on the left side and an area integral on the right. The directions of the infinitesimal path element and infinitesimal area element are:

A) always in the same direction
B) always in opposite directions
C) always perpendicular to each other
D) never perpendicular to each other
E) none of the above