Which of the Following Statements About Electromagnetic Waves in Free

Which of the following statements about electromagnetic waves in free space are true? (There could be more than one correct choice. )

A) The higher-frequency travel faster than the lower-frequency waves.
B) The higher-frequency waves have shorter wavelengths than the lower-frequency waves.
C) The wavelengths of the visible waves are some of the longest electromagnetic waves.
D) The wavelengths of the visible waves are some of the shortest electromagnetic waves.
E) The electric field vector is always at right angles to the magnetic field vector.