Gross Enrollment Rates (GERs)in Low and Middle Income Countries Have

Gross enrollment rates (GERs) in low and middle income countries have achieved nearly universal primary enrollment because?

A) Some students are younger than primary school age who are included in the GER
B) Every child in low and middle now attends school
C) There are some students included in the GER who are older than primary school age
D) There are more classroom seats than there are students