A wine sample was analysed for $\%\frac{v}{v}$ ethanol content following calibration, and the chromatogram below was obtained.

$($i$)$ Which of the two calibration plots is more reliable and why?

$($ii$)$ Calculate the $\%\frac{v}{v}$ ethanol in the sample using the internal calibration method.

$($iii$)$ Calculate the $\%\frac{v}{v}$ ethanol in the sample using the external calibration method.

$($iv$)$ Which calibration method gives a result closer to the true alcohol content of the wine $(14\mathrm{.}0\%\frac{v}{v})?$