【多选题】
Assume the scoped attribute priority does NOT yet exist. Which two create and set new request-scoped attribute priority to the value “medium”？（） 
A、
B、 ${requestScope[ ‘priority’ ] = ‘medium’ }
C、 <c：set var=priority” value=”medium” />
D、 <c：set var=”priority” scope=”request”>medium</C：set>
E、 <c：set var=”priority” value=”medium” scope=”request” />
F、 <c：set property=”priority” scope=”request”>medium</c：set>
H、 <c：set property=”priority” value=”medium” scope=”request” />
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