Calculate the following values with the aid of the rule of 72.

A If the annual growth rate is 0.3% it will take ( ) years for a country's population to double.

B. If it takes per capita real GDP 30 years to double, then the average annual rate of growth in this variable is( )%.Enter your response rounded to 2 decimal places.

C. If the annual growth rate in the capital stock is 3% a country's capital stock will double(once, twice, three times) in 24 years.