If the output of $A + \bar B$ is $Y = 0$,then the inputs are .......

Identify the correct Logic Gate for the following output $(Y)$ of two inputs $A$ and $B$.

The Boolean expression $Y = A \bar{B} C + \bar{A} \bar{C}$ can be realized with which of the following gate configurations?
$A.$ One $3$-input $\text{AND}$ gate,$2$ $\text{NOT}$ gates,one $2$-input $\text{AND}$ gate,and one $2$-input $\text{OR}$ gate.
$B.$ One $3$-input $\text{AND}$ gate,$2$ $\text{NOT}$ gates,one $2$-input $\text{NAND}$ gate,and one $2$-input $\text{OR}$ gate.
$C.$ One $3$-input $\text{OR}$ gate,$3$ $\text{NOT}$ gates,and one $2$-input $\text{AND}$ gate.
Choose the correct answer from the options given below.

The output $W$ for the given logic circuit is:

Two logic gates are connected as shown in the figure. If the inputs are $A=1$ and $B=0$, then the values of $y_1$ and $y_2$ respectively are

Write the truth table for a $NAND$ gate connected as given in the figure. Hence,identify the exact logic operation carried out by this circuit.