JEE Main Physics question

A stone tied to the end of a string 1 m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revolutions in 44 seconds, what is the magnitude and direction of acceleration of the stone?

• (A) ms and direction along the radius towards the centre
• (B) ms and direction along the radius towards the centreCorrect
• (C) ms and direction along the radius away from the centre
• (D) ms and direction along the tangent to the circle