Given the following question:
volume of a prism = (height × base × length) ÷ 2
height = 4
base = 5
length = 12
[tex]\begin{gathered} v=(4\times5\times12)\div2 \\ 4\times5=20 \\ 20\times12=240 \\ 240\div2=120 \\ =120in^3 \end{gathered}[/tex]Third option is your answer.