Link will be apear in 30 seconds.
                    
Well done! you have successfully gained access to Decrypted Link. 
Given

Average total cost is given by

Since average total cost is independent of Q. It means that by increasing the output the average cost of production remains constant. This means that the production function has a constant return to scale.
Part B
Using Shephard’s Lemma, conditional input demand is given by

and 
so taking first partial differentiation of eq (1) w.r.t w

Similarly, conditional input demand of input K

Part C
Production function Q= F(L,K)

