Find the integral.
A. 3x3 + 30x - 
x-1 + C
B. 
x4 + 25 ln 
+ C
C. 
x2 + 5 ln 
+ C
D. 3x3 + 15x - 
x-1 + C
Answer: C
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A. 
B. 
C. 
D. 