DSe type question

[SoniaKapoor]

What will be the  input combination if expansion path of firm is L=5/2K?


Please help me out..I'm not able to understand this question.
Thank YOu

[Akshay Jain]

[SoniaKapoor]

Thank you
I didnt get the part as how u got the isoquant as L^1/2*K^1/2.

Which is the optimmum condition out of the foll;
a)L=.4 , k=1
b)L=4,K=2
C)L=8,K=2.8
D)L=2,K=1.2