Several years ago, sarah purchased a structure for $150,000 that was originally placed in service in 1929. in the current year, she incurred qualifying rehabilitation expenditures of $200,000. the amount of the tax credit for rehabilitation expenditures, and the amount by which the building's basis for cost recovery would increase as a result of the rehabilitation expenditures are the following

a. $20,000 credit, $180,000 basis.
b. $20,000 credit, $200,000 basis.
c. $20,000 credit, $350,000 basis.
d. $40,000 credit, $160,000 basis.
e. none of these.