The artist Renoir's last word was "flowers," spoken as they arranged a bouquet of
roses just picked from his garden in a vase on his bedroom windowsill.

A. as they arranged a bouquet of roses just picked from his garden
B. as a bouquet of roses had been just picked from his garden and was being arranged
C. as a bouquet of roses just picked from his garden was being arranged
D. during the arrangement of a bouquet of roses just picked from his garden
E. while they arranged a bouquet of roses that had just been picked from his garden

OA C, what is the issue with D