What’s the answer??(SOMEONE PLEASE HELP ME)

We know that :
If f(x) and g(x) are Two Functions Defined under same Domain, then Composite Function : (f o g)(x) = f(g(x))
Given : f(x) = [tex]\frac{2}{x + 3}[/tex] and g(x) = [tex]\frac{1}{2x}[/tex]
⇒ (f o g)(x) = f(g(x))
⇒ [tex](f\;o\;g)(x) = f(\frac{1}{2x})[/tex]
⇒ [tex](f\;o\;g)(x) = \frac{2}{\frac{1}{2x} + 3} = \frac{4x}{1 + 6x}[/tex]
1st Option is the Answer