The footnotes to Edgewater Tractor Assembly provide the following detail on three bond issues:

A $12-$year, $3\mathrm{.}75\%$ coupon, $$200m$

B $12-$year, $3\mathrm{.}75\%$ coupon $$300m,$ callable

C $10-$year, $5\mathrm{.}10\%$ coupon, $$100m$

D $8-$year, zero$-$coupon $6\mathrm{.}25\%$ YTM$,$ $$150$ m

Given only the information listed above, the most likely ordering of calculated duration from lowest to highest would be:

a$.,A,B,C,D$

b$.,C,B,A,D$

c$.,D,C,A,B$

d$.D,C,B,A$

e$.B,D,C,A$