问题

42. Which of the following groups is meat_____
A:mutton, beef, chicken, fish
B:mutton, beef, chicken, pork
C:egg, beef, chicken, fish
D:mutton, beef, fish, pork
B:mutton, beef, chicken, pork
C:egg, beef, chicken, fish
D:mutton, beef, fish, pork
正确答案是: