An electrical appliance is supplied by a mains supply. During normal operation, the appliance takes a current of $3\ \text{A}$, although at the moment it is switched on the current momentarily increases to $4\ \text{A}$. The cable connected to the appliance is intended to carry currents up to $6\ \text{A}$. A fuse is fitted to protect the circuit. What should the fuse rating be?
- A$1\ \text{A}$
- B$3\ \text{A}$
- C$5\ \text{A}$
- D$13\ \text{A}$