If a line joining two points A(2,0) and B(3,1) is rotated about A in anti-clockwise direction `15^@`, then the equation of the line in the new position is
A. `sqrt3 x - y = 2 sqrt3`
B. `sqrt3 x + y = 2 sqrt3`
C. `x + sqrt3 y = 2sqrt3 `
D. none of these
