Inequality of Students' Grades

A school has a rule regarding how many students can participate in sports based on their grades. The rule states that for every student who receives an A, there can be up to two students who receive a B before an additional A student can be added. If the number of students who received A's is represented by $$a$$ and the number of students who received B's is represented by $$b$$, which of the following inequalities represents this relationship?