What type of crime scene sketch is best used for evidence located on the floor, walls and ceilings

a) overview or floor plan sketch
b) elevation sketch
c) cross projection (exploded view) sketch
d) perspective sketch

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

the answers would be

the first one and the second one