Choose the sentence that is correctly punctuated.
A.
After the stock market crashed in 2008, many panicking investors sold off their stocks because they were afraid prices would decline even more.
B.
After the stock market crashed in 2008, many panicking investors sold off their stocks, because, they were afraid prices would decline even more.
C.
After, the stock market crashed in 2008, many panicking investors sold off their stocks because, they were afraid prices would decline even more.
D.
After the stock market crashed in 2008 many panicking investors sold off their stocks, because they were afraid prices would decline even more.