Which of the Latest version had a 16-bit Architecture and was released on Release date 1985-11-20?
CREATE TABLE "dos_shells" (
  "name" text,
  "release_date" text,
  "latest_version" text,
  "status_support" text,
  "source_model" text,
  "architecture" text,
  "target_market" text
);
SELECT "latest_version" FROM "dos_shells" WHERE "architecture"='16-bit' AND "release_date"='1985-11-20';