Use the following information on the production chain for milk, based on the production of $900$ bottles of milk, to answer the question.

Production chain for $900$ bottles of milk

$\backslash$table$[[,$Value of sales$],[$Farm$,13500],[$Dairy$,17500],[$Supermarket$,20000]]$

Using the production method, what is the final value of sales of milk?

Select one:

a$.R45000,00$

b$.$ R$5100000$

$R20\mathrm{.}000,00$

d$.$ R$13500,00$