Answer:
B
<em>Behind </em><em>service </em><em>line </em><em>and </em><em>between </em><em>center </em><em>mark </em><em>and </em><em>his/</em><em>h</em><em>e</em><em>r</em><em> </em><em>right </em><em>boundary </em><em>line </em>
<span> A scalpel penetrates the left lung and enters the heart. </span>
This is partially true. There are many contributing reasons but this is one.
