[单选题]
An object is thrown upward wi0g, fe2 hhz q-ff6iy1oth a spe)ckb0+ pmmb* oed of 15 m/s on the surface of planet X where the acceleration due t 0*bmkbmo)+ pco gravity is $2.5 \; m/s^2$. How long does it take for the object to return to where it is thrown?
A. $6.0 \; s$
B. $8.0 \; s$
C. $10 \; s$
D. $12 \; s$
