The diagram shows the percentage of first-year girls and boys who entered a university in 2010-2015 and received a state scholarship. the blue line is boys and black line is girls.
In which of the following years did the percentage of first-year girls with state scholarships increase more than the previous year?
a) in 2011;
b) in 2012;
c) in 2013;
d) in 2014;
d) in 2015.
