Which of the following statements is NOT true about electrical resistance?

If the absolute value of the current through a resistor is increased then the absolute value of the potential difference across it will decrease

Resistors can function in circuits to regulate the amount of current that flows

Only certain types of materials have a resistance that is constant over a wide range of applied voltages

Two conductors that are the same size and shape can have different resistance values if they are made from different materials

all of the statements are true