Given the following financial data for Genera Inc:

a$.$ What was the total amount of long$-$term debt outstanding for Genera, Inc. in $2012?$

b$.$ What was the total amount of long$-$term debt outstanding for Genera, Inc. in $2013?$

c$.$ What was the change in total long$-$term debt for Genera, Inc. between December $31,2012$ and December $31,2013?$