The following table shows the four$-$firm concentration ratios of various industries.

Industry

Four$-$Firm Concentration Ratio

Aerospace products and parts $55\mathrm{.}6$

Cigarettes $98\mathrm{.}9$

Greeting cards $80$

Petroleum and coal products $34\mathrm{.}1$

Breakfast cereals $85$

Based on the data presented in the table, in which of the following industries are sales most concentrated among the four largest firms?

Petroleum and coal products

Cigarettes

Breakfast cereals

Greeting cards

Aerospace products and parts