According to the information provided , what conclusion can be drawn about rainbows? ( 1) All rainbows are equal in color intensity and dimension . (2 ) The absorption and retention of light make up the first stage in the creation of a rainbow ( ) A rainbow usually occurs when the sun is setting ( 4 ) A rainbow always occurs at the end of a powerful storm ( 5 ) Refraction , reflection , and diffraction of light are essential in the formation of a rainbow