South Africa may just be able to cling onto the stable outlook of its sole investment-grade rating this week, helping it stay clear of a forced selloff of billions of rand of its debt. Economists are divided on what Moody’s Investors Service will do when it potentially makes an announcement on South Africa’s credit assessment Friday. Half the participants in a Bloomberg survey expect it to maintain a stable outlook on its local- and foreign-currency debt, with the remainder predicting a reduction to negative. Many of those who foresee no change say there may be a move after the May 8 general election.