Answer:
Probably a bit late of an answer but the Answer is "Both"
Step-by-step explanation:
Both of the sequences line up KLM with ABC
y = Acos(Bx) + D;
D = 4, A = 2. Now T = 2π/B = 5π/8, B = 2π/(5π/8) = 16/5
WE get y = 2cos(16/5x) + 4
This is your answer ☺️☺️