Arrange the following regions of the electromagnetic spectrum in order of increasing energy: (i) x-ray, (ii) infrared, (iii) microwave, (iv) visible, (v) radio wave, (vi) gamma ray, (vii) ultraviolet.
a) (v) radio wave, (iii) microwave, (ii) infrared, (iv) visible, (vii) ultraviolet, (i) x-ray, (vi) gamma ray
b) (vi) gamma ray, (i) x-ray, (vii) ultraviolet, (iv) visible, (ii) infrared, (iii) microwave, (v) radio wave
c) (v) radio wave, (iii) microwave, (iv) visible, (ii) infrared, (vii) ultraviolet, (i) x-ray, (vi) gamma ray
d) (vi) gamma ray, (i) x-ray, (iv) visible, (vii) ultraviolet, (ii) infrared, (iii) microwave, (v) radio wave