#include&lt;stdio.h&gt;   #inlcude&lt;stdlib.h&gt;&nbsp;   int main&#40;&#41;   &#123;       int *ptr;       double *ptr;       printf&#40;&quot;%d\n&quot;,sizeof&#40;ptr&#41;&#41;;       return 0;	      &#125;
A. 4
B. 8
C. the compiler will give the error
D. segmentaion fault
Answer:A
#include&lt;stdio.h&gt;   #inlcude&lt;stdlib.h&gt;&nbsp;   int main&#40;&#41;   &#123;       int *ptr;       double *ptr;       printf&#40;&quot;%d\n&quot;,sizeof&#40;ptr&#41;&#41;;       return 0;	      &#125;
A. 4 B. 8 C. the compiler will give the error D. segmentaion fault
Explanation:Just see the output carefully.