[单选题]
Light of wavelength 550 nm in air is fou3z*blybah7 )2fn 2ja:nj-t s1e z /blend t9of7see:x;uum 5c y:hb:8 obeo travel at $1.96 \times 10^8 \; m/s$ in a certain liquid. Determine the wavelength of the light in the liquid.
A. $550 \; nm$
B. $359 \; nm$
C. $281 \; nm$
D. $303 \; nm$
