The neutral packing of export goods means ().
A. there are only trademarks or brands designated by foreign businessmen on the package, but there is no place name and manufacturer name
B. there is no trademark, brand name, production place name and manufacturer name on the package
C. the trademark or brand designated by foreign businessmen shall be adopted, and the words "made in China" shall be marked
D. there is no trademark or brand on the package, only the words "made in China" are indicated