Automotive Excellence Inc. borrowed ​$19,000.00 on March 4 with an interest rate of 6.7% per annum. On June 1, $5,500.00 was​ repaid, and on August 16, $5,000.00 was repaid. The remaining loan amount is now:
a) $8,500.00
b) $9,000.00
c) $13,500.00
d) $15,500.00