Select from options: How similar are the following two sentences?

US drone kills six militants in Pakistan: officials
US missiles kill 15 in Pakistan: officials

Give the answer on a scale from 0 - 5, where 0 is "not similar at all" and 5 is "means the same thing".

Options:
 A). 0;
 B). 1;
 C). 2;
 D). 3;
 E). 4;
 F). 5;
C).