Mashaal Masha
In triangle $ABC$, the measure of angle $B$ is $52^{\circ}$ and the measure of angle $C$ is $17^{\circ}$. What is the measure of angle $A$?
Difficulty: Easy
A: 

$21^{\circ}$

B: 

$35^{\circ}$

C: 

$69^{\circ}$

D: 

$111^{\circ}$

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