EXHIBIT 4.3 THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR UNDER ANY STATE SECURITIES LAWS AND MAY BE OFFERED, SOLD OR TRANSFERRED ONLY IF REGISTERED PURSUANT TO THE PROVISIONS OF SUCH LAWS, OF IF IN THE OPINION OF COUNSEL...Stock Option Agreement • December 29th, 1997 • Sylvan Learning Systems Inc • Services-educational services
