DIRECTION: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
(a) Both assertion (A) and reason (R) is true and reason \( (R) \) is the correct explanation of assertion (A).
(b) Both assertion (A) and reason (R) is true but reason \( (\mathrm{R}) \) is not the correct explanation of assertion (A).
(c) Assertion (A) is true but reason (R) is false.
(d) Assertion (A) is false but reason (R) is true.
Assertion : If the length of shadow of a vertical pole is equal to its height, then the angle of elevation of the sun is \( 45^{\circ} \).
Reason: According to pythagoras theorem, \( \mathrm{H}^{2}=\mathrm{P}^{2} \) \( +\mathrm{B}^{2} \), where \( \mathrm{H}= \) hypotenuse, \( \mathrm{P}= \) perpendicular and \( \mathrm{B}= \) base
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