We present a novel approach to enhance avalanche companion rescue using wearable sensing technologies. The time to find and extricate victims is most crucial: once buried by an avalanche, survival chances drop dramatically already after the first 15 minutes.

Can we draw the following conclusion?
After 15 minutes, someone's chances of being rescued from an avalanche drop. 

OPT:
 A). Yes.
 B). It's impossible to say.
 C). No.