A contractor is bidding on a retail building that is being added to an existing shopping center. At bid time without time to contact either the sub or the architect, the following bids for metal roofing are received: Sub A - $10,000 per plans and specs, Sub A is known by contractor. Sub B, $12,500, Sub B bids roof which matches existing metal roofs in the center, but is not specified by roof. Sub C, $9500, Per plans and specs, Sub C is known by contractor. Sub D, $4000, no references to plans and specs, Sub D not known by contractor. Which of the following bids is most appropriate to accept? a. Sub A b. Sub B c. Sub C d. Sub D {Ans: c. Sub C}When engaged in heavy grinding of concrete where severe exposure occurs, using a diamond tip blade, which of the following would be proper protection for the face and eyes? a. Chipping goggles and a face shield b. Chipping goggles and spectacles c. Goggles and spectacles d. Welding goggles and a face shield {Ans: a. Chipping goggles and a face shield}Who is responsible for overall construction project, planning, scheduling, and cost controls? a.