According to us, CADB is the right sequence:
(C) The demand curve shifts rightward: This is the initial trigger caused by higher consumer income.
(A) There is excess demand at the existing price: This is the immediate consequence of the shift before the market price has had a chance to react.
(D) There is upward pressure on the price and price starts rising: Buyers begin competing against one another for the limited goods, pushing the price higher.
(B) Rising price leads to contraction in demand and expansion in supply...: The rising price causes buyers to demand slightly less (contraction) and sellers to supply more (expansion) until they meet at the new, higher equilibrium point.
However, as per NTA, Option-2 is the final answer key (after all the challenges):
