一个语法题，大家看看选什么？

The nineteenth-century chemist Humphry Davy presented the results of his early experiments in his “Essay on Heat and Light,” a critique of all chemistry since Robert Boyle as well as a vision of a new chemistry that Davy hoped to found.

1. a critique of all chemistry since Robert Boyle as well as a vision of a

2. a critique of all chemistry following Robert Boyle and also his envisioning of a

3. a critique of all chemistry after Robert Boyle and envisioning as well

4. critiquing all chemistry from Robert Boyle forward and also a vision of

5. critiquing all the chemistry done since Robert Boyle as well as his own envisioning of

A?

BCD都不对称，E拗口，分词结构有逻辑错误，我这么觉得

我手上的版本答案是A。但是我有一个疑惑，为什么可以a chemistry呢？