Passwords are case-sensitive, and they may consist of letters, numbers, and ________

One reason for not using a header node in the LinkedList class is because:

A. it makes the code more complex B. it would significantly slow down all list operations C. the header node would interfere with the array element position in the hash table D. the header node would waste more memory for an empty linked list in a hash table

Describe electromagnetic waves.

What will be an ideal response?