Resistance of an ammeter is $4\Omega$ and its range is 0 to 2 A. What shunt resistance should be used to increase its range from 0 to 8 A? 

• A

  0.75 $\Omega$

• B

  1.82 $\Omega$

• C

  1.33 $\Omega$

• D

  2 $\Omega$