Which of the following statements is true a The spectrum of

Which of the following statements is true?

(a). The spectrum of an aperiodic continuous signal is aperiodic and discrete.

(b). The spectrum of a periodic continuous signal is periodic and continuous.

(c). The spectrum of a periodic discrete sequence is periodic and discrete.

(d). The spectrum of a periodic continuous signal is periodic and discrete.

(e). None of the above.

Solution

Discrete in domain corresponds to periodic in other domain and periodic in one domain corresponds to discrete... So option c is correct