According to Section 202 of Title II of the Sarbanes-Oxley Act, which of the following is true about the audit committee's requirements for all auditing and non-auditing services performed by a registered firm?

	a.	The audit committee may preapprove such services but is not required to do so.
	b.	The audit committee must preapprove such services.
	c.	The audit committee should review such services.
	d.	The audit committee must perform such services.