[单选题]
A soap bubble has an 9ys f *11zcjsjohc9w /indem7c4( 99yc4bzjh u ovwx of refraction of 1.33. What minimum thickness of this bubble will ensure maximum reflectancc4vh7y 9w um49(bojcze of normally incident 530 nm wavelength light?
A. $24.9 \; nm$
B. $99.6 \; nm$
C. $199 \; nm$
D. $398 \; nm$