Name the height in feet for the guard from north carolina-charlotte
CREATE TABLE "d" (
  "player" text,
  "no_s" text,
  "height_in_ft" text,
  "position" text,
  "school_club_team_country" text
);
SELECT "height_in_ft" FROM "d" WHERE "position"='guard' AND "school_club_team_country"='north carolina-charlotte';