Goldman Sachs CEO David M. Solomon Says Environment For Investment Banking Activity Continues To Be Incredibly Robust, Particularly, M&A; With The Conflict In The Middle East, IPO Activity Slowed A Little Bit In March; The Level Of Uncertainty Is Higher, So We Have To Watch That Carefully; CEOs Are Focused On How Commodity Prices Will Affect Economy; Resolution Of The Conflict Drags, That Probably Will Be A Headwind For Inflation Trends As We Get Further Into The Second And The Third Quarter