$A$ Zener diode voltage regulator operated in the range $120 \, V - 180 \, V$ produces a constant supply of $110 \, V$ and $250 \, mA$ to the load. If the maximum current is equally shared between the load and the Zener diode, then the values of load resistance $(R_L)$ and series resistance $(R_S)$ are respectively

• A
  $R_L = 280 \, \Omega, R_S = 70 \, \Omega$
• B
  $R_L = 440 \, \Omega, R_S = 140 \, \Omega$
• C
  $R_L = 70 \, \Omega, R_S = 280 \, \Omega$
• D
  $R_L = 440 \, \Omega, R_S = 1400 \, \Omega$