The content of PORTC after execution of the following code will be

PORTC $=0$;

PORTC $=$ PORTC $|099$;$|$

PORTC $=$ PORTC;

A$.66$

B$.066$

C$.099$

D$.$ None of the above

$6.$ With XTAL $=1MHz.$ To get a $20-$microsecond delay, the value should be loaded into TCNTO register using Normal mode and TOV$0$ flag will be

A$.230$

B$.0FC$

C$.0EC$

D$.$ none of the above

$7.$ A sub$-$signal $x_a(t)=6\mathrm{.}35cos(2600t)$ is quantized with desired $6\mathrm{.}2mv$ resolution, what should be the number of bits $(N)$ used in the $\frac{A}{D}$ conversion?

a$.N=8.$

b$.N=9.$

c$.N=10.$

d$.N=11.$

e$.$ None of the above.