PDF chapter test TRY NOW

In this exercise, an Assertion is followed by the Reason. Mark the suitable answer from the given:
 
Assertion(A): From the figure, \(AB = 10 \ m\), \(\angle ACB = 30^{\circ}\), then \(BC = 10 \ m\).
 
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Reason(R): \(tan \ \theta = \frac{\text{Opposite side}}{\text{Adjacent side}} = \frac{AB}{BC}\) where \(\theta\) is the angle \(ACB\).
 
Which of the following is the correct option for the given statements?