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单选题
Given an HttpServlet Request request and Http Servlet Response response， which sets a cookie “username” with the value “joe” in a servlet.？（）
A
request.add Cookie （“username”. “joe”）
B
request.set Cookie （“username， “joe”）
C
response.add Cookie （username”， “joe”））
D
request.add Header （new Cookie （“username”， “joe”））
E
request.add Cookie （new Cookie （“username”， “joe”））
F
response.add Cookie （new Cookie （“username”， “joe”））
G
response.add Header （new Cookie （“username”， “joe”））
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