What's inside the apartment: The apartment consists of a bedroom, kitchen, living room, and bathroom. 
In the bedroom, there is a cabinet and two desks, with a water glass, a bag of chips, and a plate stored inside the cabinet. 
The kitchen is equipped with two tables, eight cabinets, a stove, a dishwasher, a microwave, and a fridge. A plate and an apple are placed on one of the kitchen tables. The second cabinet from the left holds a condiment bottle, while the third one contains an apple. The first, fourth, and fifth cabinets are empty. The sixth and eighth cabinets each have a wine glass, and the seventh cabinet stores two plates. The dishwasher houses a wine glass, and the microwave contains a condiment bottle and a salmon. The fridge is stocked with a cupcake and two plates. 
The living room features a coffee table and a sofa. On the coffee table, there is a remote control, a water glass, a bottle of wine, and a dish bowl. The sofa is adorned with two cupcakes and two books. 
The bathroom is fitted with a cabinet, which is currently empty. 
Actions taken by Mary: Mary is situated in the kitchen. She strides towards the refrigerator and is on the verge of opening it. 
Question: If Mary has been trying to get a cupcake, which one of the following statements is more likely to be true? (a) Mary thinks that the cupcake is inside the fridge. (b) Mary thinks that the cupcake is not inside the fridge. Please respond with either a or b.