Brianna has found a journal article that includes some information she may cite in her speech. She has taken the following informal notes about it so she can verbally cite it later."Tomas da Silva, 2011, 'The impact of Russian monetary policy on the Great Recession,' Journal of International Economics, vol. 37, no. 2, pp. 113-134."What important piece of information has Brianna forgotten, without which she may not be able to properly cite this source during her speech?

A. the author's qualifications 
B. a summary of the source
C. the date when she accessed the source
D. the publication location

Answer: A