​Select the fraction from among the given options that can replace the question mark (?) in the following series.

$$\tfrac{3}{4},\tfrac{7}{4},\tfrac{5}{4},\tfrac{9}{4},?$$​​​​

Correct option is A

Numerator $$\rightarrow$$ 3 + 4 = 7 , 7 - 2 = 5, 5 + 4 = 9, 9 - 2 =7,