challenge: Which of the following is a characteristic of the venom delivery system of Latrodectus spiders?
  
  A. The venom is more potent in male spiders due to their smaller body size
  B. Only the female spider can deliver venom to humans due to larger chelicerae
  C. Both male and female spiders have equally effective venom delivery systems
  D. The spiders' venom is only effective against children and infirm adults
  Answer: 