Which statement about cache poisoning is most correct? This type of question contains radio buttons and checkboxes for selection of options. Use Tab for navigation and Enter or space to select the option. option A Almost every device on the network, from a smartphone or laptop on up$,$ has an address and DNS cache on it; these can be poisoned in a variety of ways, exposing the user and the network to various attacks. option B Cache poisoning can be prevented by encrypting the cache. option C The cache on a user's local machine is immune from being poisoned by an attacker. option D Privately maintained DNS servers are the most lucrative targets of attackers, and thus the best strategy is to use commercial DNS service providers with proven security and reliability records.