McDonald’s managed to eke out a higher profit for its first quarter even as it failed to lift sales with its Dollar Menu. It said sales at stores open more than 13 months fell 1 percent — the first such drop in a decade — and warned that it’s expected to dip again in April. Sales fell 1.2 percent in the US and 1.1 percent in Europe. For the quarter, it earned $1.27 billion, or $1.26 per share, vs. $1.26 billion, or $1.23, a year ago. Analysts expected $1.26 per share, according to FactSet.