Prepare a time$-$function map for getting a shoe shine using the steps below.

Customer provides instructions $(5sec.)$

Operator brushes shoes $(10sec.)$

Operator cleans shoes $(30sec.)$

Operator applies polish $(30sec.)$

Operator buffs shoes $(45sec.)$

Operator requests approval and payment $(5sec.)$

Customer pays and tips $(20sec.)$

Choose the correct flow chart.

A$.$