CANADA MULLING SELLING PETRO-CANADA - MULRONEY Prime Minister Brian Mulroney said the government was considering selling Petro-Canada and the sale would proceed if it were in the national interest to do so. Mulroney told the House of Commons assets of the huge oil company would be examined before a decision was made, just as other state-run companies were studied before being sold under Ottawa's privatization program. "The government is going to examine assets of this nature to ascertain if they continue to play an appropriate role in public policy and we will make a determination as we have in other cases," Mulroney told the daily question period. Asked by opposition members to clairify Finance Minister Michael Wilson's statement on Friday that Petro-Canada no longer has any pubilic policy role, Mulroney said his government has long promised to sell off companies that could be better run by the private sector. Outside the House, Energy Minister Marcel Masse said Petro-Canada would be worth between three and four billion dlrs and, because of the size, could be difficult to sell. He also said he would prefer to see Canadians participating in any privatization, but would not give any details on timing of a sale.