Which query is a correctly formatted nested search?
A.
“energy policy” w/5 (“alternative energy” w/10 “solar power”)
B.
“energy policy” w/5 [“alternative energy” w/10 “solar power”]
C.
{“energy policy” w/5 “alternative energy” w/10 “solar power”}
D.
“energy policy” w/5 “alternative energy” w/10 “solar power”