As per de Broglie's formula, a macroscopic particle of mass 100 g and moving at a velocity of 100 cm s⁻¹ will have a wavelength of
A. 6.6×10⁻²⁹cm
B. 6.6×10⁻³⁰cm
C. 6.×10⁻³¹cm
D. 6.6×10⁻³²cm