In the case of an integrated defined-contribution plan, the permitted disparity rules limit the amount of an employers contributions that may be allocated to participants whose compensation exceeds the integration level specified in the plan. Under the permitted disparity rules, which of the following integration formulas is allowable?

		A base contribution percentage of 2%, plus a permitted disparity of 9%
		A base contribution percentage of 4%, plus a permitted disparity of 10%
		A base contribution percentage of 5%, plus a permitted disparity of 5.7%
		A base contribution percentage of 6%, plus a permitted disparity of 5%