What is the IUPAC name of the compound with this structure?
$\table , , H, , H, , H, , H, ,; , , ∣, , ∣, , ∣, ,∣, ,; H, -, C, -, C, -, C, -, C, -, H; , , ∣, , ∣, , ∣, ,∣, ,;, , H, , CH_3, , H, , H, ,;$

• A.3-methylbutane
• B.3-methylpentane
• C.2-methylbutane
• D.2-methylpropane