Go back to MB2-228 - Microsoft CRM 1.2 Extending Microsoft CRM with .NET

Question :-

When creating a new activity for an Account, which of the following columns in the activity class schema is used to set the "Regarding" attribute of the activity to a specified account?
Set ownerid, ownertype to the associated account.
Set objectid to the associated account and set objecttype to Microsoft.Crm.Platform.Types.otAccount.
Set owningbusinessunit to an array of objecttype structs which includes the associated account id and objecttype of Microsoft.Crm.Platform.Types.otAccount.
Use the CRMActivity.Update method to specify the activityPartyXml to set the associated account details.

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