Question $6(1$ point$)$

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A rule issued by the federal Environmental Protection Agency $($EPA$)$ limits the amount of carbon that can be emitted from a car's exhaust system. California state law prescribes much higher limits$.$ Under the U$.$S$.$ Constitution

both the rule and the law are invalid.

both the rule and the law apply concurrently.

the California law takes precedence.

the EPA rule takes precedence.