A single-stage, low-pass RC filter with a resistance of 93 , Ω is designed to have a cut-off frequency of 50 , {Hz}. Determine the capacitance of the filter in units of μ F.

a) 0.029 , μ F
b) 0.018 , μ F
c) 0.035 , μ F
d) 0.042 , μ F