By DAMIAN J. TROISE and ALEX VEIGA (AP) — Stocks mostly fell in afternoon trading on Monday, adding to the declines that started last week as investors continue to be concerned about rising interest rates and the potential for inflation down the road. The S&P 500 was down 0.3% as of 2:57 p.m. Eastern, pulled down by technology and health care companies which have done well over the past year. The Dow