If a K⁰ Meson at Rest Decays in 0

Multiple Choice

If a K⁰ meson at rest decays in 0.89 *10 ^{- 10} s,how far will a K⁰ meson moving at 0.96 c travel through a bubble chamber?

A) 17 cm
B) 1.1 cm
C) 53 cm
D) 42 mm
E) 9.2 cm