Answer:
i beleive it is the 3rd choice
Step-by-step explanation:
For this case we have the following system of equations:

We multiply the first equation by -1:

We have the following equivalent system:

We add the equations:

Equality is not fulfilled, so the system of equations has no solution.
Answer:
Option C
t must equal √2h/g but I don't see that in the choices above