Modified UGC NET 2012 Memory allocation scheme

Question

Which among the following is (are) able to modify previously allocated space

I. calloc()                 II. free()          III. realloc()             

A. Both II and III

B. I , II and III

C. III only

D. II only

Comments

https://gateoverflow.in/56221/Ugc-net-cse-june-2012-part-3-question-24

Answer 1

I. calloc() allocates the desired memory space, initializes it to 0 and the returns a pointer to the first byte of allcated space.
II. free() deallocates the previously allocated space.
III. realloc() is used to change the size of previously allocated space.

Hence, answer should be C.