The Graphs of Which Three of the Following Four Vector

Multiple Choice

The graphs of which three of the following four vector functions lie along the line y = 4 - x?

A) x = 6 - t², y = t² - 2
B) x = cos²t, y = sin²t + 3
C) x = 2e^t, y = 2e^t - 8
D) x₃ = ln (1/t) , y = ln (e⁴t)