The antialiasing system has a cut-off frequency fm (=1/Tm), its output is sampled periodically every Ts seconds, For proper recovery of the signal at the receiver, Ts must be:

• A. Ts ≥ (Tm/2)
• B. Ts ≥ (2Tm)
• C. Ts ≤ (Tm/2)
• D. (4Ts) ≥ (1/Tm)