Consider the following statements related to the definition of public administration

1. According to Karl Marx, public administration consists of all those operations having to fulfill or enforce public policy for their purpose. 

2. According to L D White, administration is determined action taken in pursuit of a conscious purpose.

3. According to Frederic K Lane's, the administration is about organizing and maintaining human and fiscal resources to attain a group’s goals.

Which of the statements is/are correct?