An ideal coil of $10H$ is connected in series with a resistance of $5 \Omega$ and a battery of $ 5V$. 2 second after the connection is made the current flowing in amperes in the circuit is

Question

$\begin {array} {1 1} (A)\;1-e & \quad (B)\;e \\ (C)\;e^{-1} & \quad (D)\;1-e^{-1} \end {array}$