10. If a function $f ( x )$ defined on $\mathbb{R}$ satisfies $f ( 0 ) = - 1$, and its derivative $f ^ { \prime } ( x )$ satisfies $f ^ { \prime } ( x ) > k > 1$, then among the following conclusions, the one that must be wrong is A. $f \left( \frac { 1 } { k } \right) < \frac { 1 } { k }$ B. $f \left( \frac { 1 } { k } \right) > \frac { 1 } { k - 1 }$ C. $f \left( \frac { 1 } { k - 1 } \right) < \frac { 1 } { k - 1 }$ D. $f \left( \frac { 1 } { k - 1 } \right) > \frac { k } { k - 1 }$
Section II (Non-Multiple Choice Questions, 100 points)
II. Fill-in-the-Blank Questions: This section contains 5 questions, each worth 4 points, for a total of 20 points. Write your answers in the corresponding positions on the answer sheet.
10. If a function $f ( x )$ defined on $\mathbb{R}$ satisfies $f ( 0 ) = - 1$, and its derivative $f ^ { \prime } ( x )$ satisfies $f ^ { \prime } ( x ) > k > 1$, then among the following conclusions, the one that must be wrong is\\
A. $f \left( \frac { 1 } { k } \right) < \frac { 1 } { k }$\\
B. $f \left( \frac { 1 } { k } \right) > \frac { 1 } { k - 1 }$\\
C. $f \left( \frac { 1 } { k - 1 } \right) < \frac { 1 } { k - 1 }$\\
D. $f \left( \frac { 1 } { k - 1 } \right) > \frac { k } { k - 1 }$
\section*{Section II (Non-Multiple Choice Questions, 100 points)}
II. Fill-in-the-Blank Questions: This section contains 5 questions, each worth 4 points, for a total of 20 points. Write your answers in the corresponding positions on the answer sheet.\\