Go back and take a look at the ratios calculated for Caterpillar throughout the Assessing Supplier Financial Health topic. Given the ratios, which of the following is an accurate assessment of Caterpillar in terms of liquidity?

a$.$ There is some variability in time in the D$/$E ratio. Does this mean they have increased the amount of debt that they are taking on$?$ Would have to do some industry comparison. Times interest earned is fine, they are able to pay off the interest on debt.

b$.$ Current ratio has decreased, potentially with more debt being added. However, the quick ratio has increased. May have some changing inventory policies?

c$.$ It looks like they are trying to manage the C$2$C flow using a number of different methods$$which in the case of CAT has decreased $8$ days in $3$ years.

d$.$ Showing declines in all metrics over the three years assessed. This could be an indication of a problem.