In November 2020, which of the following has launched a new large-scale late-stage trial to test a two-dose regimen of its experimental COVID-19 vaccine?

In November 2020, which of the following has launched a new large-scal

1.	In November 2020, which of the following has launched a new large-scale late-stage trial to test a two-dose regimen of its experimental COVID-19 vaccine?
A.	Pfizer
B.	AstraZeneca
C.	Johnson & Johnson
D.	Procter and Gamble
E.	Gilead Sciences
Answer» D. Procter and Gamble