why we neglect interelectrode capacitance of a transistor device when it is working at low frequency

 why we neglect interelectrode capacitance in of transistor at low frequency?

  we know that reactance of capacitor is 

Xc=1/j(wc)

where w is angular frequency 

As frequency is very small the angular frequency (w) will also be very small ( f=2πw).

let w → 0  ( w tends to zero)

 Xc→∞

( anything divided by small value gives a large value)

so Xc is very high means the resistance offered by the capacitor is very large so capacitor act as open circuit

(open circuit contains infinite resistance so capacitor behaves as open circuit due to it's high reactance)

This open circuit is same as there are no capacitors that is why we neglect interelectrode capacitor at low frequency