You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
American_Broadcasting_Company

Context:
On December 7, 1965, Goldenson announced a merger proposal with ITT to ABC management; the two companies agreed to the deal on April 27, 1966. The FCC approved the merger on December 21, 1966; however, the previous day (December 20), Donald F. Turner, head antitrust regulator for the United States Department of Justice, expressed doubts related to such issues as the emerging cable television market, and concerns over the journalistic integrity of ABC and how it could be influenced by the overseas ownership of ITT. ITT management promised that the company would allow ABC to retain autonomy in the publishing business. The merger was suspended, and a complaint was filed by the Department of Justice in July 1967, with ITT going to trial in October 1967; the merger was officially canceled after the trial's conclusion on January 1, 1968.

Question:
When was the merger between ITT and ABC officially canceled?

January 1, 1968