The correct answer is
D: At the White House Chanukkah party in 2011, the West Point Jewish Chapel Choir entertained guests by singing holiday songs including Maoz Tzur, Who Can Retell and Oh Chanukkah. After the official end of the party, the choir met privately with President Barack Obama for a photo op, at which time he asked them to sing another song. At the suggestion of the choir director, the group sang Lo Yisa Goy, the traditional Jewish folk song based on the words of Isaiah, including the line “Nation shall not take up sword against nation; they shall never again know war.”