Do the Provisions of the GATT and WTO Permit Countries

Do the provisions of the GATT and WTO permit countries to apply their own environmental regulations against imports?

A) No; environmental regulations applying to domestic production and imports need to be negotiated internationally under treaties such as the Kyoto Protocol.
B) No; environmental regulations applying only to imports need to be negotiated internationally under treaties such as the Kyoto Agreement.
C) Yes; and countries may require stricter environmental regulations for imports than for domestic production.
D) Yes; as long as environmental regulations apply uniformly to domestic production and imports.