【单选题】The circuit in Figure 8-1 fails to produce the proper data output. The individual flip-flops are checked with a logic probe and pulser and each checks OK. What is the most likely cause of the problem?
A.
One of the interconnect lines between two stages has a solder bridge to ground.
B.
The data output line is grounded.
C.
One of the flip-flops has a solder bridge between its input and Vcc.