$($Relativity $-$ Time Dilation$)$ As measured by someone on earth, a spaceship traveling at $96\mathrm{.}4\%$ the speed of light takes $11\mathrm{.}2$ years to travel to an alien planet. How long does the trip take from the perspective of someone on the spaceship?

a$)2\mathrm{.}98$ years

b$)7\mathrm{.}27$ years

c$)42\mathrm{.}1$ years

d$)30\mathrm{.}7$ years

e$)$ None of the above.