Which of the Following Is Not a True Statement

Which of the following is not a true statement?

A) If you visit the Grand Canyon and two consecutive layers are deposited without detectable interruption of geologic time, this would be a conformable contact
B) If you visit the Grand Canyon and two consecutive layers are deposited with detectable interruption of geologic time, this would be an unconformity
C) An unconformity is a bounding surface that represents a long interval of time for which no geologic record exists in that place
D) An unconformity can only represent billions of years of missing geologic time in the rock record