The plane 2x - 2y + z + 12 = 0 touches the sphere x2 + y2 + z2 - 2x - 4y + 2z - 3 = 0 at the point
1
\(\dfrac{a+1}{2} = \dfrac{b-2}{-2} = \dfrac{c+1}{1} = \dfrac{c-a-2b-3}{12}\)
2
\(\dfrac{a+1}{2} = \dfrac{b-2}{-2} = \dfrac{c+1}{1} = \dfrac{c-a-2b-3}{-12}\)
3
\(\dfrac{a+1}{2} = \dfrac{b-2}{-2} = \dfrac{c-1}{1} = \dfrac{c-a-2b-3}{12}\)
4
\(\dfrac{a+1}{2} = \dfrac{b+2}{-2} = \dfrac{c+1}{1} = \dfrac{c-a-2b-3}{12}\)