A. calloc() takes a single argument while malloc() needs two arguments
B. malloc() takes a single argument while calloc() needs two arguments
C. malloc() initializes the allocated memory to ZERO
D. calloc() initializes the allocated memory to NULL

Solution

B. malloc() takes a single argument while calloc() needs two arguments

Explanation

The malloc() takes a single argument, while calloc() takess two. Second, malloc() does not initialize the memory allocated, while calloc() initializes the allocated memory to ZERO.Both malloc and calloc are used in C language for dynamic memory allocation they obtain blocks of memory dynamically.