Petition by defendant for discretionary review pursuant to G.S. 7A-31 and Appellate Rule 16(b) as to issues in addition to those presented as the basis for the dissenting opinion in the Court of Appeals allowed 4 May 2000. Petition by plaintiff for discretionary review pursuant to G.S. 7A-31 and Appellate Rule 16(b) as to issues in addition to those presented as the basis for the dissenting opinion in the Court of Appeals allowed 4 May 2000.