Which section of Pakistan Penal Code (PPC) defines public servants?

1. Section 11
2. Section 21
3. Section 15
4. Section 25

Section 2 on Definitions states that IIIIPUBLIC SERVANT” means a public servant as defined in Section 21 of the Pakistan Penal Code (Act XL V of 1860), and includes an employee of any corporation or other body or organization set up controlled or administered by or under the authority of the Federal Government;”