The value of \(\mathop \smallint \nolimits_0^1 \frac{{{{\sin }^{ - 1}}x}}{x}dx\) is:

• A. π log 2
• B. \(\frac{2 \pi }{3}\)
• C. \(\frac{\pi }{4}\)
• D. \(\frac{\pi }{2}log2\)