A month after Gov. David A. Paterson dropped his proposal for a soda tax, New York City's health commissioner has written an article advocating "hefty" taxes on sodas and sports drinks containing sugar. Such a tax, the article said, could be the biggest boon to public health since tobacco taxes. The commissioner, Dr. Thomas R. Frieden, and Kelly D. Brownell of Yale University, his co-author, argue in the New England Journal of Medicine that a tax of a penny per ounce could reduce consumption by more than 10 percent and raise $1.2 billion a year in New York State alone.

Can we draw the following conclusion?
They argued for a tax of a penny per ounce of sugared drinks.

Possible answers:
 (a). Yes;
 (b). It's impossible to say;
 (c). No;
(a).