નીચેના કાર્બોકેટાયનને તેમની સ્થાયિતાના ઉતરતા ક્રમમાં ગોઠવો:
$\stackrel{+}{C}H_3, (CH_3)_3\stackrel{+}{C}, CH_3\stackrel{+}{C}H_2, (CH_3)_2\stackrel{+}{C}H$

• A
  $(CH_3)_3\stackrel{+}{C} > (CH_3)_2\stackrel{+}{C}H > CH_3\stackrel{+}{C}H_2 > \stackrel{+}{C}H_3$
• B
  $\stackrel{+}{C}H_3 > CH_3\stackrel{+}{C}H_2 > (CH_3)_2\stackrel{+}{C}H > (CH_3)_3\stackrel{+}{C}$
• C
  $(CH_3)_2\stackrel{+}{C}H > (CH_3)_3\stackrel{+}{C} > CH_3\stackrel{+}{C}H_2 > \stackrel{+}{C}H_3$
• D
  $CH_3\stackrel{+}{C}H_2 > (CH_3)_3\stackrel{+}{C} > (CH_3)_2\stackrel{+}{C}H > \stackrel{+}{C}H_3$