SAN FRANCISCO, CA - APRIL 22:  A sign is posted on the exterior of a McDonald's restaurant on April 22, 2015 in San Francisco, California. McDonald's reported a decline in first quarter revenues with a profit of $811.5 million, or 84 cents a share compared to $1.2 billion, or $1.21 a share, one year ago.  (Photo by Justin Sullivan/Getty Images)