Which one condition is true to check the periodically for discrete time signal (where K is any integer, N is period, f₀ is frequency of signal)

Which one condition is true to check the periodically for discrete tim

1.	Which one condition is true to check the periodically for discrete time signal (where K is any integer, N is period, f₀ is frequency of signal)
A.	f₀ = K/N
B.	f₀ = K + N
C.	f₀ = KN
D.	f₀ = N/K
Answer» B. f₀ = K + N