Fact 1: Carbon may be stored in sedimentary rock for millions of years.

Fact 2: Marble is considered a carbonate rock .

Given the two facts above, answer the question "Carbon may be stored in what for years?" with the following options: 
- marble
 - peat
 - black holes
 - coal
 - bricks
 - wetland
 - dogs
 - fossils


 

 marble        