AP EAMCET Medical 24 Apr 2019 Shift 2 Paper

Study the following regarding arthropods
A) In some spiders respiration is performed by both book lungs and trachea
B) Development of king crab includes trilobite larva
C) Blood of arachnids contain haemocyanin
D) In diplopods mandibles are modified into gnathochilarium
From the above. Identify the incorrect statement(s)