Which electronic configuration is common to all actinoid elements?

• A
  [Rn] $5f^{1-14} 6d^{0-1} 7s^2$
• B
  [Rn] $5f^{0-14} 6d^{0-2} 7s^2$
• C
  [Rn] $5f^{1-14} 6d^1 7s^2$
• D
  [Rn] $5f^{0-14} 6d^1 7s^2$