Which of the following equations represents an appropriate linear model to relate the annual price of tea (Y) to the annual price of sugar (X), including an intercept term (β₀) and a coefficient for the price of sugar (β₁)?
(a) Y = β₀ + β₁X² + ε
(b) Y = β₀X + β₁ + ε
(c) Y = β₀ + β₁X + ε
(d) Y = β₀ / β₁X + ε
