Determine Rydberg's constant (to 3 significant digits) at 97.3 nm.
a) 1.09 x 10⁷ m⁻1
b) 1.16 x 10⁷ m⁻1
c) 1.21 x 10⁷ m⁻1
d) 1.27 x 10⁷ m⁻1