1.DescribeGlobalResult object, which allows retrieving an array of DescribeGlobalSObjectResult objects by calling subjects.
2.DescribeGlobalsResult object, which allows retrieving an array of DescribeGlobalOrgObjectResult objects by calling a subject list.
3.DescribeGlobalResult object, which allows retrieving an array of DescribeGlobalOrgObjectResult objects by calling a subject list.
4.None of these