Find the spherical coordinates (rho, θ, φ) of the point with the rectangular coordinates (1, -√3, 2√3). Use symbolic notation and fractions where necessary. Which of the following options represents the correct spherical coordinates for the given point?
A) (1, π/3, π/3)
B) (2, π/4, π/6)
C) (3, π/6, π/4)
D) (4, π/3, π/6)