def flash$\_$leds$($pin$,$ count, interval$=1)$:

for $i$ in range$($count$)$:

for $j$ in pin:

GPIO.output $($pin$,$ GPIO.HIGH$)$

time.sleep$($interval$)$

for $j$ in pin:

GPIO.output $($pin$,$ GPIO.LOW$)$

time.sleep$($interval$)$

Is this code is a function to:

a$.$ blinking only $3$ leds

b$.$ non of these

c$.$ blinking a pin

d$.$ blinking multiple pins