Please explanation and do not copy from Chegg. Otherwise i have to report the answer.

Which of the following events would be covered by a claim made CGL policy that was in force between January 1, 2018 and December 31, 2018, and that had a retroactive date of January 1, 2017 and a 60 days extended reporting period? (A) Covered loss occurred July 29, 2018, claim filed December 31, 2018. (B) Covered loss occurred December 7, 2016, claim filed February 15, 2018. (C) Covered loss occurred May 15, 2018, claim filed May 10, 2019. (D) Covered loss occurred March 10, 2017, claim filed June 5, 2017. (E) None of the above