SHM equation and phaseMedium

Initial Conditions in Simple Harmonic Motion

Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Knowing initial position x₀ and initial momentum p₀ is enough to determine the position and momentum at any time t for a simple harmonic motion with a given angular frequency ω.
Reason (R) : The amplitude and phase can be expressed in terms of x₀ and p₀.
In the light of the above statements, choose the correct answer from the options given below :

SELECT ONE OPTION