Under-the-regulation-of-interstate-commerce-Law-question

Under the regulation of interstate commerce: 

___A. 

the states have the exclusive power to regulate commerce that passes across their lines.

___B. 

activities affecting interstate commerce do not come under the power of the federal government.

___C. 

regulation on any activity is appropriate if it aids interstate commerce.

___D. 

intrastate activities affecting interstate commerce can be regulated only by the state governments.

___E. the Congress cannot regulate a local activity.