The floral formula of mustard (or Brassicaceae/Cruciferae) is:

• A
  $ \oplus \, K_{2+2} \, C_{4} \, A_{2+4} \, \underline{G}_{(2)} $

  
• B
  $ \oplus \, K_{2+2} \, C_{4} \, A_{2+4} \, \overline{G}_{(2)} $

  
• C
  $ \% \, K_{2+2} \, C_{4} \, A_{2+4} \, \underline{G}_{(2)} $

  
• D
  $ \oplus \, K_{4} \, C_{4} \, A_{2+4} \, \underline{G}_{(2)} $