What is the perspective of Karl Marx on history?

Marx believes that history is the process by which man creates himself through human work.
Marx criticizes Hegel for conceiving historical movement only under an abstract, logical and speculative form.
Marx believes that the history of humanity must be understood from the real individuals, their action and their material conditions of life.
a) Only I is correct.
b) Only II is correct.
c) I, II and III are correct.
d) Only III is correct.