Which of the following logic gates is called a Universal gate?

Which of the following is an inverter gate?

The circuit given below is that of:

The truth table of the following circuit is

If two inputs of a $NAND$ gate are shorted,the resulting gate is

If ${V}_{A}$ and ${V}_{B}$ are the input voltages (either $5\, V$ or $0\, V$) and ${V}_{0}$ is the output voltage,then the two gates represented in the following circuit $(A)$ and $(B)$ are: