Rao Technologies, a California$-$based high$-$tech manufacturer, is considering outsourcing

some of its electronics production. Four firms have responded to its request for bids, and

CEO Mohan Rao has started to perform an analysis on the scores his OM team has entered

in the table below.

I. Click the icon to view the table.

Weights are on a scale from $1$ through $30,$ and the outsourcing provider scores are on a

scale of $1$ through $5.$ The weight for the labor factor is shown as a $w$ because Rao's OM

team cannot agree on a value for this weight.

In the following table, the weighted score is computed for each candidate

When w $=0,$ the highest score is achieved by

When w $=10,$ the highest score is achieved by

When w $=20,$ the highest score is achieved by

When w $=30,$ the highest score is achieved by

A$,$B$,$C$,$D$?$