On Any Given Tilted Bed, Strike and Dip Are

Question 9
Multiple Choice

On any given tilted bed, strike and dip are A) parallel to one another. B) perpendicular to one another. C) at some large angle to one another, but not 90 degrees (greater than 90 degrees). D) at some small angle to one another, but not 90 degrees (less than 90 degrees).