Choose from options: Determine if the sentence is true based on the text below:
water purifying is a science technique

How to disinfect drinking water in the wilderness<br>Pack the proper water purifying equipment and chemicals. If you're backpacking you should have a high quality pump with a filter, and/or purifying tablets. Immerse the end of the pump where water flows in in the clearest portion of the water source that you can see.
OPT:
(A). Yes;
(B). It's impossible to say;
(C). No;
(A).