From the exercept below; the expression ……something fishy refers to?

This question is based on A.H. Mohammed’s The Last Days at Forcados High School.

Jimi and Efua, there’s something fishy going on there….

A. Nene’s fear that Efua and Jimi were no longer going out
B. Nene’s fear that Jimi was not determined to jilt Efua
C. Nene’s annoyance that Efua might snatch Jimi from her
D. Nen’s suspicion that Jimi and Efua were having a relationship

Correct Answer: Option D