#include&lt;stdio.h&gt;   #include&lt;fcntl.h&gt;&nbsp;   int main&#40;&#41;   &#123;       pid_t fd;       char ch;       int count;       fd = open&#40;&quot;san.c&quot;,O_RDONLY&#41;;       do&#123;           count = read&#40;fd,&amp;ch,1&#41;;           printf&#40;&quot;%c&quot;,ch&#41;;       &#125;while&#40;count&#41;;       return 0;   &#125;
A. it will print nothing
B. it will print the source code of the source file “san.c”
C. segmentation fault
D. none of the mentioned
Answer:A
#include&lt;stdio.h&gt;   #include&lt;fcntl.h&gt;&nbsp;   int main&#40;&#41;   &#123;       pid_t fd;       char ch;       int count;       fd = open&#40;&quot;san.c&quot;,O_RDONLY&#41;;       do&#123;           count = read&#40;fd,&amp;ch,1&#41;;           printf&#40;&quot;%c&quot;,ch&#41;;       &#125;while&#40;count&#41;;       return 0;   &#125;
A. it will print nothing B. it will print the source code of the source file “san.c” C. segmentation fault D. none of the mentioned
Explanation:none.