Match:
A. r(1997)−r(1992)
B. ∫19921997r′(t)dt
C. r(1997)
D. ∫19921997r(t)dt
E. [ r(1997)−r(1992)/1997−1992]
and interpretations:
A. Average rate of change of the debt rate between 1992 and 1997
B. Change in debt rate between 1992 and 1997
C. Increase in debt between 1992 and 1997
D. Debt of the country in 1997
E. Rate of debt in 1997