What is the best way to check if organization has Person Account enable or not using Salesforce Apex?

// Test to see if person accounts are enabled.
public Boolean personAccountsEnabled()
{
try
{
// Try to use the isPersonAccount field.
sObject testObject = new Account();
testObject.get( 'isPersonAccount' );
// If we got here without an exception, return true.
return true;
}
catch( Exception ex )
{
// An exception was generated trying to access the isPersonAccount field
// so person accounts aren't enabled; return false.
return false;
}
}