阅读下列四篇短文，从每小题后所给的A,B,C或D四个选项中，选出最佳选项。
SCS Global Services （SCS） has evaluated a new methodology for measuring the carbon sequestration（封存） ability of soil under the Verified（验证） Carbon Standard （VCS）, a leading greenhouse gas （GHG） accounting system. The methodology, developed by The Earth Partners, will allow land managers who sequester GHGs in grasslands and farmlands to produce carbon credits for sale in the voluntary market.
