[单选题]
Light of wavelength 500 nm illumina0py vlnioa7 rl1:(n/ztes a soa cin7 zwqcyl v0,7(2gq ju8ki(p film ( n = 1.33). What is the minimum thickness of film that will give an interference when the light is incidentnu j8k lcqvig i07cyqz2( ,w(7 normally on it?
A. $24 \; nm$
B. $94 \; nm$
C. $188 \; nm$
D. $376 \; nm$
