The Principle Behind the "Sandwich Rule" States That

Multiple Choice

The principle behind the "sandwich rule" states that

A) flowcharts should leave as little white space as possible on each page to minimize waste.
B) annotations should be placed between each key input and output symbol.
C) every process symbol should be placed between an input and output symbol.
D) flowcharts should use as many different types of symbols as possible to thoroughly document basic I/O functions.