Two particles A and B separated by a distance 2R are moving counter clockwise along the same circular path of radius R each with uniform speed v. At time \[t=0\], A is given a tangential acceleration of magnitude \[\alpha =\frac{\text{77}{{\text{v}}^{2}}}{25\pi \text{R}}\] then

• A. the time lapse for the two bodies to collide is \[\frac{6\pi \text{R}}{5\text{v}}\]
• B. the angle covered by A is 11\[\pi \]/6
• C. angular velocity of A is \[\frac{11\text{v}}{5\text{R}}\]
• D. radial acceleration of A is \[\text{289 }{{\text{v}}^{\text{2}}}\text{/5R}\]