$$Indexing $$ B$+-$tree UpdateShow the resultant B$+-$tree of the operations for:$1.$ Add $$Bradley$$ to the tree, then $$Aaron$.$ Give a resultant tree for both steps. $($Draw two trees, similar in style to the one above$2.$ Start over from the given tree, delete $$Adams$.($Draw one tree, similar in style to the one above$)3.$ Start over from the given tree, delete $$Wu$,$Srinivasan$,$ then $$Mozart$.$ Give a resultant tree for each removed key$-$values. $($Draw two trees, similar in style to the one above$)$