question: Which of these statements are true?
  Choices:
  A:The largest possible number of mosquitoes is 2 million mosquitoes.
  B:The largest possible number of mosquitoes is 4 million mosquitoes.
  C:More rainfall always relates to less mosquitoes.
  D:More rainfall relates to less mosquitoes as long as rainfall is less than $2 \mathrm{~cm}$.
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: Which of these statements are true?
  Choices:
  A:The largest possible number of mosquitoes is 2 million mosquitoes.
  B:The largest possible number of mosquitoes is 4 million mosquitoes.
  C:More rainfall always relates to less mosquitoes.
  D:More rainfall relates to less mosquitoes as long as rainfall is less than $2 \mathrm{~cm}$.
query_cot: Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
  Question: Which of these statements are true?
  Choices:
  A:The largest possible number of mosquitoes is 2 million mosquitoes.
  B:The largest possible number of mosquitoes is 4 million mosquitoes.
  C:More rainfall always relates to less mosquitoes.
  D:More rainfall relates to less mosquitoes as long as rainfall is less than $2 \mathrm{~cm}$.
question_for_eval: Which of these statements are true?
  Choices:
  A:The largest possible number of mosquitoes is 2 million mosquitoes.
  B:The largest possible number of mosquitoes is 4 million mosquitoes.
  C:More rainfall always relates to less mosquitoes.
  D:More rainfall relates to less mosquitoes as long as rainfall is less than $2 \mathrm{~cm}$.