Answer:
option (a) is false
Explanation:
m-ary of binary tree has m=2 is a correct statement.
and the statement (c) and (d) states about m-ary tree are also correct.
hence, from the given statement option (b) is false because when we count the roots the number of vertices are odd.
for full m ary internal vertex is exactly m children and for an m-ary has atmost m children.