16. On December 31, 2018, Blais Industries had long-term debt totaling $120,000 on their balance sheet. During 2019, they paid $10,000 in interest on that debt and $50,000 in principal. During the year they also issued new long-term debt totaling $20,000. What is the balance in their long-term debt account at the end of 2019? $80.000 $90,000 $100,000 O $140,000