The Earth is an oblate spheroid and not a perfect sphere. This is because

1. The Earth has a rotational motion and the rotational speed increases as one goes from the Poles towards the Equator.

2. Drifting and wobbling motion of Earth due to the rotation of Earth.

3. The intensity of sunlight received at the Equator is lower than that at the Poles.

Select the correct answer using the code given below.