Consider the following linear programming problem, which maximizes profit for two products: regular (R) and super (S):

MAX 5R + 75S

s.t.

1.2 R + 1.6 S 600 assembly (hours)

0.8 R + 0.5 S 300 paint (hours)

0.16 R + 0.4 S 100 inspection (hours)

R, S >= 0

See the sensitivity report provided below:

The upper limit of the regular product (R) objective function coefficient (profit of R ) is Please choose the option that best fit the empty space above. \begin{tabular}{l} 120 \\ \hline 20 \\ \hline 40 \\ \hline 70 \end{tabular} None of the above