多选题Given that a scoped attribute cart exists only in a user’s session， which two，taken independently，ensurethe scoped attribute cart no longer exists？（）A${cart = null}Bc：remove var=cart /Cc：remove var=${cart} /Dc：remove var=cart scope=session /Ec：remove scope=sessioncart/c：remove
多选题
Given that a scoped attribute cart exists only in a user’s session， which two，taken independently，ensurethe 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>
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