What's inside the apartment: The apartment consists of a bedroom, kitchen, living room, and bathroom. 
In the bedroom, there are two desks and a cabinet, which contains a wine glass, a water glass, a bottle of wine, and a dish bowl. 
The kitchen is equipped with two tables, eight cabinets, a stove, a dishwasher, a microwave, and a fridge. On one of the kitchen tables, there is a salmon, a water glass, and a dish bowl, while a bottle of wine is on the other. The first kitchen cabinet contains a condiment bottle, the third one has an apple, and the fifth one holds a plate. The stove houses two cupcakes, the dishwasher contains a dish bowl and a water glass, and the microwave has a cupcake. The fridge is stocked with two apples, a plate, a salmon, and a dish bowl. The second, fourth, sixth, seventh, and eighth kitchen cabinets are empty. 
The living room features a coffee table and a sofa, which holds three books, two wine glasses, and a water glass. 
The bathroom is fitted with a cabinet, which is currently empty. 
Actions taken by Sarah: Sarah is situated in the bathroom. She proceeds to the kitchen, advances towards the third cabinet, opens it, subsequently closes it, and then strides towards the fridge. 
Question: If Sarah has been trying to get a cupcake, which one of the following statements is more likely to be true? (a) Sarah thinks that the cupcake is not inside the microwave. (b) Sarah thinks that the cupcake is inside the microwave. Please respond with either a or b.