A \( i_{1} = r_{1} \)
B \( ∠ i_{1} = ∠ i_{2} = ∠ \frac{A}{2} \)
C \( ∠ i_{1} = ∠ i_{2} = ∠ \frac{A + ∂_{m}}{2} \)
D \( r_{1} = r_{2} \)
Correct Answer: Option D
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