Which of the following sentences is not wrong, please modify it. Thank you!

Should be changed to. Due to the strengthening of ecological environment monitoring in the production process, the pollution-free vegetables produced by the base every year are not only supplied to the main markets in this province, but also sold to Henan, Hebei and other provinces. (Improper collocation)

C should be that the flowers, leaves and fruits of Zanthoxylum bungeanum contain aromatic oil, and citral extracted from oil is the main raw material for preparing edible essence and cosmetic essence. (vague)

D Different from writers, photographers don't pour their feelings about mountains, rivers, vegetation, cities and villages into their works, but focus directly on the lens. (Incorrect word order)