{
    "ResponseMetadata": {
        "RequestId": "ab072fb0-9167-11e2-b6fb-e599bc501f26"
    }, 
    "OptionGroupsList": [
        {
            "MajorEngineVersion": "5.5", 
            "OptionGroupDescription": "Default option group for mysql 5.5", 
            "Options": [], 
            "EngineName": "mysql", 
            "AllowsVpcAndNonVpcInstanceMemberships": true, 
            "OptionGroupName": "default:mysql-5-5"
        }
    ]
}