A Meson When at Rest Decays 2 $\mu$ S After It Is Created

Multiple Choice

A meson when at rest decays 2 $\mu$ s after it is created.If moving in the laboratory at 0.99c, its lifetime according to laboratory clocks would be:

A) the same
B) 0.28 $\mu$ s
C) 4.6 $\mu$ s
D) 14 $\mu$ s
E) none of these