Janet Calculated the GDP Growth Rates for France Between 2012

Janet calculated the GDP growth rates for France between 2012 and 2013. Using 2012 prices for both years, GDP increased 5 percent. Using 2013 prices for both years, GDP increased 1 percent. hence the chained-price method will calculate that between these years, real GDP increased by

A) 5 percent.
B) 4 percent.
C) 1 percent.
D) 6 percent.
E) 3 percent.