The molecular structure of the hormone histamine is shown. Which row gives the bond angles $x$, $y$ and $z$ in histamine arranged correctly from the smallest to the largest?
- A$x \rightarrow y \rightarrow z$
- B$y \rightarrow x \rightarrow z$
- C$y \rightarrow z \rightarrow x$
- D$z \rightarrow y \rightarrow x$