Read the following selection Global markets, already buoyed by the victory of President-elect Joe Biden, exploded on the news from Pfizer. The S&P 500 surged 3.7 percent after the opening bell, and the Dow Jones Industrial Average was up more than 1,300 points. Pfizer jumped more than 9 percent. Other vaccine stocks were up as well.

Which of the following conclusions can be drawn from the selection above?
AThe approval of a vaccine causes consumers to save more money.

BThe approval of a vaccine helps the economy.

CThe approval of a vaccine causes consumers to spend more money.

DThe approval of a vaccine hurts the economy.