The correct answer is
A: German Jewish immigrants Joseph Schwarzchild and Ferdinand Sulzberger were partners in the Schwarzchild & Sulzberger company, whose main business was meatpacking. They expanded by finding other uses for the by-products of their work, including tennis racket strings, surgical sutures, footballs and other products. The company eventually became the Thomas E. Wilson Company, now known as Wilson Sporting Goods, the supplier of footballs for the NFL (including the deflated footballs).