What does "Li Du" in "Li Du's articles are as bright as ever" refer to? (multiple choice question)

Choose C, referring to Li Bai and Du Fu.

From: "Tiao Zhang Ji" Tang Dynasty·Han Yu

Li Du's article is as bright as ever.

I don’t know how stupid the crowd is, so I will slander them.

Translation:

The coexistence of Li Bai and Du Fu’s poems and essays is like a ray of light illuminating the poetry world.

But I don’t know that the frivolous scholars are ignorant, how can they use old slanderous words to slander them? Extended information

This poem was written in the tenth year (815) or the eleventh year (816) of Yuanhe, Emperor Xianzong of the Tang Dynasty. At that time, Li Bai and Du Fu were not generally respected by people. Before Han Yu, Li Bai's reputation was higher than that of Du Fu; by Han Yu's time, some people respected Du and suppressed Li. Han Yu tried his best to promote Li Du because of this poem.

The poetic achievements of Li Bai and Du Fu were often not taken seriously in the mid-Tang Dynasty when the poetry styles of Wang, Meng, Yuan and Bai were prevalent, and they were even derogated by some people. In this poem, Han Yu enthusiastically praised the poems of Li Bai and Du Fu, showing his high admiration. In terms of evaluation of Li and Du's poems, Han Yu was much better than his contemporaries.

In this poem, the author uses rich imagination, exaggeration, metaphor and other expression techniques to shape the artistic image of Li Bai, Du Fu and their poems, as well as the artistic image of the author and his poems. , vividly expresses some of the poet's sophisticated insights into poetry, which is what makes this poem worth cherishing ideologically and artistically.