CREATE TABLE "roller_coaster" (
"Roller_Coaster_ID" int,
"Name" text,
"Park" text,
"Country_ID" int,
"Length" real,
"Height" real,
"Speed" text,
"Opened" text,
"Status" text,
PRIMARY KEY ("Roller_Coaster_ID"),
FOREIGN KEY ("Country_ID") REFERENCES `country`("Country_ID")
)

CREATE TABLE "country" (
"Country_ID" int,
"Name" text,
"Population" int,
"Area" int,
"Languages" text,
PRIMARY KEY ("Country_ID")
)
SELECT Status FROM roller_coaster GROUP BY Status ORDER BY COUNT(*) DESC LIMIT 1
Please show the most common status of roller coasters.