SAT English Practice Question

The following sentence is an excerpt from a research paper. \"The team's analysis of the data revealed that the average mass of the mycorrhizal host plants was significantly larger than the average mass of the nonmycorrhizal hosts. This finding, which is likely what the student expected, was not surprising.\"

1. A.This finding, which is likely what the student expected, was not surprising.
2. B.This finding, which is likely what the student expected was not surprising.
3. C.This finding which is likely what the student expected was not surprising.
4. D.This finding, which is likely what the student expected, was not surprising;