[单选题]
A soap bubble has an index of refractionddg1 ; l(*p 2auw7sd2q02kbios)gk hn of 1.33. What minzo 4s9li sl-h3imum thickness of this bubble will 3ilhs49z os- lensure maximum reflectance of normally incident 530 nm wavelength light?
A. $24.9 \; nm$
B. $99.6 \; nm$
C. $199 \; nm$
D. $398 \; nm$
