19. To accurately measure the current in a 1.0-k resistor, an ammeter should have a resistance that...

19. To accurately measure the current in a 1.0-kΩ resistor, an ammeter should have a resistance that is

(a) much larger than 1.0 kΩ,

(b) much smaller than 1.0 kΩ,

(c) about the same as 1.0 kΩ,

(d) as large as possible.