Can you please explain the code and how you obtained the answer? Thanks.

uestion 111: calloc of an array of double reals A C programmer makes a dynamic allocation of two arrays as follows: int n; double *a, **b; n-4000 a (double*) calloc(n, sizeof (double)); b= (double**) calloc (n, sizeof (double*)); What is the amount of memory (in bytes) allocated by the C programmer? 16000 bytes32000 bytes 64000 bytes