Which of the following should be used for freeing the memory allocated

1.	Which of the following should be used for freeing the memory allocated in the following C code?
A.	free(ptr1);
B.	<pre class="prettyprint lang-c">free(ptr1);<br> free(ptr1->next)<br></pre>
C.	<pre class="prettyprint lang-c">free(ptr1->next);<br> free(ptr1);<br></pre>
D.	All of above
E.	None of these
Answer» D. All of above

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Which of the following should be used for freeing the memory allocated in the following C code?

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