1.The 20th20^{\text{th}}20th term from the end of the progression 20,1912,19,1712,…,−12920, 19\tfrac{1}{2}, 19, 17\tfrac{1}{2}, \dots, -12920,1921,19,1721,…,−129 is:a.−118-118−118b.−110-110−110c.−115-115−115d.−100-100−100Login to continueOnly logged in users canattempt or see the solution.