Given the following function header:

def z(k1,k2,k3,k4)

Which of the following is the correct statement to invoke (use) it?

	a.	z(k1=1,k2=2,k3=3k4=,4)
	b.	z()
	c.	z(1,2,3,4)
	d.	z

What is the output of the following code?

i = 0 sum = 0 while i <= 4: sum += i i = i+1 print sum

	a.	0
	b.	4
	c.	None of the above
	d.	10