Decide whether integration by parts or substitution should be used to compute the indefinite integral 
dx If substitution, indicate the value of u; if by parts, indicate f(x) and g(x).
A. integration by parts; f(x) = cos(ln x), g(x) = 
B. integration by parts; f(x) = 1, g(x) = 
C. substitution; u = 
D. substitution; u = ln x
E. none of these
Answer: D
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