A $100\%$ efficient step-down transformer has primary voltage $V_p$ and primary current $I_p$. Which row compares the secondary voltage with $V_p$ and the secondary current with $I_p$?
- Asecondary voltage greater than $V_p$, secondary current greater than $I_p$
- Bsecondary voltage greater than $V_p$, secondary current less than $I_p$
- Csecondary voltage less than $V_p$, secondary current greater than $I_p$
- Dsecondary voltage less than $V_p$, secondary current less than $I_p$