Find all the second order partial derivatives of the given function.f(x, y) = ln (x2y - x)
A. 
= 
; 
= - 
; 
= 
= - 
B. 
= 
; 
= 
; 
= 
= 
C. 
= 
; 
= - 
; 
= 
= - 
D. 
= 
; 
= - 
; 
= 
= - 
Answer: C
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A. 
< c
B. 
> 12
C. 
> 12
D. 
? c