A small speck of dust rests on a horizontal turntable at a fixed distance \(r\) from the central axis of rotation. At time \(t = 0\), the turntable starts from rest and rotates with a constant angular acceleration \(\alpha\).

Choice	Angle between \(\vec{a}_{\text{total}}\) and \(\vec{v}\) as \(t\) increases	Relationship between \(a_c\) and \(a_t\) at \(\Delta\theta = 1.0\text{ rad}\)
Row A	Decreases toward \(0^\circ\)	\(a_c = 2a_t\)
Row B	Increases toward \(90^\circ\)	\(a_c = 2a_t\)
Row C	Decreases toward \(0^\circ\)	\(a_c = a_t\)
Row D	Increases toward \(90^\circ\)	\(a_c = a_t\)

Which row in the table correctly identifies both the trend in the angle between the total linear acceleration vector \(\vec{a}_{\text{total}}\) and the velocity vector \(\vec{v}\) as time increases, and the relationship between the centripetal acceleration \(a_c\) and tangential acceleration \(a_t\) at the instant the turntable has rotated through an angular displacement of \(\Delta\theta = 1.0\text{ rad}\)?