A circuit is so formed such that the source-R-C-diode-switch are in series. Consider the initial voltage across the C to be zero. The diode is so connected that it is forward biased when the switch is closed. When the switch is closed,

• A. the current will decay exponentially & the voltage will increase exponentially
• B. the current will increase exponentially & the voltage will increase exponentially
• C. the current will fall to zero & the voltage both will decay exponentially
• D. the voltage and current both remain constant