GMAT Sentence Correction (SC) | Re: All across Detroit, whitewashed fences, new roofs

All across Detroit, whitewashed fences, new roofs, and freshly painted porches are signs of a brisk urbanrenewal led by new immigrants, one clapboard house at a time.

A. renewal led by new immigrants, one clapboard house at a time
B. renewal led by new immigrants, with one clapboard house at a time
C. renewal that has been led by new immigrants, with one clapboard house at a time
D. renewal, which had been led by new immigrants, one clapboard house at a time
E. renewal, which has been led by