Carla is a dressmaker by trade. She's always hemmed and finished her clothing by hand, which is the longest part of the process. She went to the Toronto Home Show and saw a demonstration of the Singer Serger $2000.$ It showed her that she could finish a $4-$hour job in $45$ minutes. Carla started thinking about all the wedding dresses that she could finish without working $18-$hour days. Carla is at which stage of the consumer decision$-$making process?

a$.$ Evaluation of alternatives

b$.$ Need recognition

c$.$ Postpurchase behaviour

d$.$ Information search