单选题What can be done to enable the debug information for functions to be displayed when using ‘ksh - x’to debug a script?（）ARun the script using 'ksh -fx'.BRun the script using 'ksh -a function -x'.CEdit the script and add 'set -x' at the beginning.DEdit the script and add 'set -x' at the beginning of each function.
单选题
What can be done to enable the debug information for functions to be displayed when using ‘ksh - x’to debug a script?（）
A
Run the script using 'ksh -fx'.
B
Run the script using 'ksh -a function -x'.
C
Edit the script and add 'set -x' at the beginning.
D
Edit the script and add 'set -x' at the beginning of each function.
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