The "Rule of 70" Is a Formula for Determining the Approximate

Multiple Choice

The "rule of 70" is a formula for determining the approximate number of

A) years that it would take for a value (like real GDP) to expand 70 times.
B) years that it would take for a value (like real GDP) to double.
C) times a value (like real GDP) is a multiple of 70.
D) times one could double a certain value (like real GDP) over 70 years.