Assertion (A): The ordinate of a point describing the circle \( x^{2}+y^{2}=25 \) decreases at t...

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Assertion (A): The ordinate of a point describing the circle \( x^{2}+y^{2}=25 \) decreases at the rate of \( 1.5 \mathrm{~cm} / \mathrm{s} \). The rate of change of the abscissa of the point when ordinate equals \( 4 \mathrm{~cm} \) is \( 2 \mathrm{~cm} / \mathrm{s} \).
Reason (R): \( x d x+y d y=0 \)
(A) Both A and R are true and R is the correct explanation of A.br(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
(E) Both A and R are false.
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