The discrete time function defined as u(n)=n for n‚Äö√Ñ√∂‚àö¬¢‚Äö√Ñ¬¢0;=0 for n

The discrete time function defined as u(n)=n for n‚Äö√Ñ√∂�

1.	The discrete time function defined as u(n)=n for n‚Äö√Ñ√∂‚àö¬¢‚Äö√Ñ¬¢0;=0 for n<0 is an:$
A.	Unit sample signal
B.	Unit step signal
C.	Unit ramp signal
D.	None of the mentioned
Answer» D. None of the mentioned