More than six months after surgery the two patients involved have significantl
y reduced their insulin injections, ________ report in New Scientist.
a. as stated in a
b. publishing
c. recommend a
d. according to
答案为d，没问题，但想请问a错在哪里？

being

我觉得A和D皆可，A作被动省略了was不过我自己的写作习惯是会把这种"As..."放句首

我会选a d.要to a report或to reports

感谢各位的解答