Please answer the question and be detailed

3. If the memory allocation works correctly, say so. If it does not, fix it. (a) We want to make a copy of a string. Does the following code work? char msg[] - "message"; char *msg2; msg2 = (char*) malloc (sizeof (char) strcpy(msg2, msg); strlen(msg)); * (b) We want to concatenate two strings into a third string. Does the following code work? char msg1[] - "message "; char msg2[] - "in a bottle"; char *msg3; msg3 - (char *) malloc(strlen (msg1) + strlen(msg2) + 1); strcpy(msg3, msgl); strcat (msg3, msg2); (c) We want to concatenate two arrays into a third array. Does the following code work? int a1[5]0, 1, 2, 3, 4J; int a2[5] - [0, 1, 2, 3, 4}; int *a3, i; a3 - (int *) malloc(10); for (i - 0; i