Volatility ${σ^{*}, σ^{r e c}}$	Dividend (q)	BSM Price	American Option Pricing Solver	FFT Price	Exercising Time (yr.)
0.1, 0.000	0.002	20.249557	20.249556	20.398278	$\frac{1}{12}$
0.1, 0.025	0.002	20.249557	20.249556	20.398278	$\frac{1}{12}$
0.1, 0.000	0.002	20.746027	20.746026	20.894006	0.25
0.1, 0.025	0.002	20.746157	20.746127	20.894135	0.25
0.1, 0.000	0.002	21.484649	21.484550	21.631524	0.5
0.1, 0.025	0.002	21.491432	21.490722	21.638307	0.5
0.1, 0.000	0.002	22.949394	22.948914	23.094093	1
0.1, 0.025	0.002	23.009897	23.009970	23.154597	1