Question: To identify female blue crabs to harvest crab roe.

  Options: 
 A. Look at the topside of the crab. The female blue crab has a broad, triangular-shaped area in the center of the shell, whereas the male has a more distinctive, elongated spire in the center.
 B. Look at the underside of the crab. The female blue crab has a broad, triangular-shaped area in the center of the shell, whereas the male has a more distinctive, elongated spire in the center.
Answer: B