In which waveform logic 1 is represented by half bit wide pulse and logic 0 is represented by absence of pulse?

In which waveform logic 1 is represented by half bit wide pulse and lo

1.	In which waveform logic 1 is represented by half bit wide pulse and logic 0 is represented by absence of pulse?
A.	Unipolar RZ
B.	Bipolar RZ
C.	RZ-AMI
D.	Manchester coding
Answer» B. Bipolar RZ