McDonald’s posted better-than-expected sales in the first quarter but said high gas prices and consumer anxiety could dent sales this spring. McDonald’s Chairman and CEO Chris Kempczinski said the company has been making progress bringing lower-income customers back into its stores with combo meal deals and value pricing. But he said gas prices will disproportionately impact lower-income consumers. McDonald’s global same-store sales rose 3.8% in the January-March period, which was better than Wall Street was expecting. But same-store sales slid in April. McDonald's said its revenue rose 9% to $6.52 billion in the first quarter, which also beat Wall Street's expectations