The value of ammeter and voltmeter resistance are 0.1 Ω and 2000 Ω respectively as shown in the figure below. The percentage error in the calculated value of R = 100 Ω (voltmeter reading 200 V/ammeter reading 2 A) is nearly

• A. -2%
• B. -5%
• C. 2%
• D. 5%