Walton Construction contracts to build a school for Raymond Independent School District $($RISD$).$ The construction contract requires Walton to name both RISD and its architect, Drew Shapes, as additional insureds under Walton's CGL policy. Drew Shapes is added to the policy using the "additional insuredarchitects, engineers, or surveyors not engaged by the named insured" endorsement. Which of the following accurately describes Drew Shapes' scope of coverage under Walton's CGL policy?

a$.$ Drew has coverage only for its non$-$professional liability arising out of the RISD project.

b$.$ Drew has coverage for both its professional and non$-$professional liability arising out of the RISD project.

c$.$ Drew has coverage only for RISD's professional liability arising out of the RISD project.

d$.$ Drew has coverage only for Walton's non$-$professional liability arising dat of the RISD project.