0 votes 0 votes reena_kandari asked Dec 13, 2016 reena_kandari 192 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes I think Option D is correct . It can be replaced with left sibling and right sibling . PEKKA answered Dec 14, 2016 PEKKA comment Share Follow See all 0 reply Please log in or register to add a comment.