In answer to your question its obviously (3).
Regarding the advert, it inadvertantly reflects the reality of the situation, T42s have no medium or long range capability against sea skimmers (as admitted in Hansard) and sans Shar neither does the fleet as a whole. We are down to relying on CIWS. I think a Phalanx can engage 5 targets before reloading - what happens to the 6th? With ASaC we can detect them, but without the Shar, nothing to prevent the attack.