A customer leaves each of his grandchildren shares of XYZ Fund in his will. The customer purchased the shares 20 years ago for $4.50 a share. At the time of the customer's death, they are worth $15.50 a share. If the grandchildren redeem their shares, what is their cost basis per share?

	A)	$4.50
	B)	$9.50
	C)	$15.50
	D)	This cannot be determined from the information given