An electric iron draws 10 amp, an electric toaster draws 5 amp and an electric refrigerator draws 3 amp from 220 V service line. The three appliances are connected in parallel. If all the three are operating at the same time, the fuse to be used should be of :

• A

  10 amp

• B

  5 amp

• C

  15 amp

• D

  20 amp