NEET 2022 Biology question

Which one of the following statement is not true regarding gel electrophoresis technique?

• (A)Bright orange coloured bands of DNA can be observed in the gel when exposed to UV light.
• (B)The process of extraction of separated DNA strands from gel is called elution.
• (C)The separated DNA fragments are stained by using ethidium bromide.
• (D)The presence of chromogenic substrate gives blue coloured DNA bands on the gel.Correct