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多項選擇題

Given that a scoped attribute cart exist only in a user’s session, which two, taken independently, ensure the scoped attribute cart no longer exists?()

A. ${cart = null } 
B. <c:remove var=”cart” /> 
C. <c:remove var=”${cart}” /> 
D. <c:remove var=”cart” scope=”session” /> 
E. <c:remove scope=”session”>cart</c:remove>
F. <c:remove var=”${cart}” scope=”session” /> 
G. <c:remove scope=”session”>${cart}</c:remove>

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