题目堂兄妹的亲缘系数为()A. 1/4B. 1/8C. 1/16D. 3/16E. 0堂兄妹的亲缘系数为()A. $1/4$B. $1/8$C. $1/16$D. $3/16$E. $0$题目解答答案B. $1/8$