请教一道gwd语法

GWD3-Q21:

Data gathered by weather satellites has been analyzed by scientists, reporting that the Earth’s northern latitudes have become about ten percent greener since 1980, due to more vigorous plant growth associated with warmer temperatures and higher levels of atmospheric carbon dioxide.

A.      Data gathered by weather satellites has been analyzed by scientists, reporting that the Earth’s northern latitudes have

B.       Data gathered by weather satellites has been analyzed by scientists, and they report the Earth’s northern latitudes as having

C.      After analyzing data gathered by weather satellites, scientists report that the Earth’s northern latitudes have

D.      After analysis of data, gathered by weather satellites, scientists report the Earth’s northern latitudes as having

E.       After data gathered by weather satellites was analyzed by scientists, who report that the Earth’s northern latitudes have

这题答案选c，我有一个疑问，report用一般现在时可以吗，我觉得用过去时会好一点

a呢，我虽然也觉得a不是最优的选择，可是a，c无法定论

是否这是一道错题呢

请大牛指点

那report用一般现在时没有问题吗

a错是肯定的