could you help this? the answer is (B) I want more detail explanation!

I V= IRQIr 8 y A simple DC circuit with a single ohmic resistor is set up. A graph is produced to show the voltage drop across the resistor versus current. For an ideal battery, the graph is directly proportional. If the battery has some internal resistance, how, if at all, would such a graph change? (A) The graph would remain directly proportional. (B) The graph would be linear, but would have a negative y-intercept. (C) The graph would be linear, but would have a positive y-intercept. (D) The graph would be nonlinear