[单选题]
What is the minimum thic rehfw-/; eyyip3r0gw,4tr(o kness of a nonreflecting film coating (n = 1.g/sqk- up 0kko7iyt(a oaial7*1(7b a40g fsv30) on a glass lens (nuk/ v(*ali (70fa74pbsg 0i7kago s-1yt okqa = 1.50) for wavelength 500 nm?
A. $250 \; nm$
B. $192 \; nm$
C. $167 \; nm$
D. $96.2 \; nm$
