Light of Wavelength 684 Nm Shines on a Soap Bubble

Light of wavelength 684 nm shines on a soap bubble film (n = 1.46) .For what soap film thickness,other than the minimum thickness,will constructive interference occur?

A) 117 nm
B) 468 nm
C) 1248 nm
D) 586 nm
E) ​1171 nm