#include&lt;stdio.h&gt;    #include&lt;fcntl.h&gt;    #include&lt;errno.h&gt;    #include&lt;sys/stat.h&gt;    #include&lt;sys/mman.h&gt;&nbsp;    int main&#40;&#41;    &#123;        int s_id;        s_id = shm_open&#40;&quot;shared_memory&quot;,O_TRUNC,0666&#41;;        if&#40;s_id == -1&#41;            perror&#40;&quot;shm_open\n&quot;&#41;;        return 0;    &#125;
A. this program will give an error because OTRUNC is not a valid flag
B. this program will give an error
C. this program will give segmentation fault
D. none of the mentioned
Answer:A
#include&lt;stdio.h&gt;    #include&lt;fcntl.h&gt;    #include&lt;errno.h&gt;    #include&lt;sys/stat.h&gt;    #include&lt;sys/mman.h&gt;&nbsp;    int main&#40;&#41;    &#123;        int s_id;        s_id = shm_open&#40;&quot;shared_memory&quot;,O_TRUNC,0666&#41;;        if&#40;s_id == -1&#41;            perror&#40;&quot;shm_open\n&quot;&#41;;        return 0;    &#125;
A. this program will give an error because OTRUNC is not a valid flag B. this program will give an error C. this program will give segmentation fault D. none of the mentioned
Explanation:There is no shared memory object “shared_memory” already present in the system.