A medical transport helicopter is incoming, and you are responsible for setting up the landing zone (LZ). You should:\ Select one:\ A. ask bystanders to stand at all four corners of the LZ.\ B. place four flares 100 feet apart in an "

x

" pattern.\ C. use yellow caution tape to mark off the LZ perimeter.\ D. use weighted cones to mark all four corners of the LZ.