11) For the tree below, the PostOrder traversal is: a) BCA b) BAC c) ABC d) CAB e) CBA 12) For the tree below, the depth of node H is a)o b)1 c2 d)3 13) For the tree below, the height is a) o b) 1 c) 2 d) 3 e)4 b)A BC c)H IJKLM NO d) 14) For the tree below, the external nodes are a) D, E, F, G none