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# Honors for the Top Students

SATMAT-O7KRVN

The grades for Mr. O'Brien's mathematics students are shown in the table above. His classes are honored on an electronic sign in the main foyer for each quarter that more than half of his students earn $A's$ and/or $B's$.

For how many quarters were his classes honored?

A

$1$

B

$2$

C

$3$

D

$4$