Which of the following statement is NOT true about the properties of electromagnetic waves?

These are the options for the question :Which of the following statement is NOT true about the properties of electromagnetic waves?

(I) These waves do not require any material medium for their
propagation
(ii) Both electric and magnetic field vectors attain the maxima and
minima at the same time
(iii) The energy in electromagnetic wave is divided equally between
electric and magnetic fields
(iv) Both electric and magnetic field vectors are parallel to each other

The correct answer is -(iv) Both electric and magnetic field vectors are parallel to each
other.