The bilinear transformation is used to design an ideal discrete-time lowpass filter with cutoff frequency c

The bilinear transformation is used to design an ideal discrete-time lowpass filter with cutoff frequency ω_c = 3π/5 from an ideal continuous-time lowpass filter with cutoff frequency Ω_c = 2π (300) rad/s. Give a choice for the parameter T that is consistent with this information. Is this choice unique? If not, give another choice which is consistent with the information.