An isosceles triangle possesses

1. linear symmetry
2. point symmetry
3. rotational symmetry
4. all of these

A regular pentagon does not possess

1. linear symmetry
2. point symmetry
3. rotational symmetry
4. all of these

An equilateral triangle does not possess

1. linear symmetry
2. point symmetry
3. rotational symmetry
4. none of these

Which of the following letters of English alphabet has a rotational symmetry?

1. C
2. K
3. N
4. T