A student performed a similar experiment with four hypothetical cations, A+, B+, C+, and D+ and two hypothetical anions, X- and Y-. Her data is below:

Analyte X- Y-
A+ yellow ppt yellow ppt
B+ white ppt clear, colorless solution, NR
C+ clear, colorless solution, NR clear, colorless solution, NR
D+ white ppt blue ppt
The student was then provided with an unknown containing one of the anions above. She reacted it with the four hypothetical cations, A+, B+, C+, and D+, her results are below:

Analyte unknown
D+ white ppt
Which of the following statements is most true with regard to this data?

Group of answer choices

a. The unknown anion is most likely X-
b. More tests would need to be performed to identify the anion in the unknown.
c. The unknown anion is most likely Y-