[单选题]
An object is thrown upward waihx5 (/ z(w2rv: oheuith a speed o/8r1maqt.s )on s6jv nf 15 m/s on the surface of planet X where the accele/n)1.6or s qa8m vtjsnration due to 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. $12 \; s$
