Surface waves are typical by a field that decays ______away from the dielectric surface, with most of the field contained in or near the dielectric.

Surface waves are typical by a field that decays ______away from the d

1.	Surface waves are typical by a field that decays ______away from the dielectric surface, with most of the field contained in or near the dielectric.
A.	Linearly
B.	Exponentially
C.	Cubical
D.	Field remains a constant
Answer» C. Cubical