Protons can be accelerated to speeds near that of light in particle accelerators. Estimate the wavelength (in meters) of such a proton moving at 0.9c (where c is the speed of light). Round your answer to significant digits.

a) 2.59 × 10⁻¹⁶ m
b) 3.24 × 10⁻¹⁶ m
c) 4.11 × 10⁻¹⁶ m
d) 5.17 × 10⁻¹⁶ m