What's inside the apartment: The apartment consists of a bedroom, kitchen, living room, and bathroom. 
In the bedroom, there is a coffee table and a desk, with a book and a water glass placed on the coffee table. 
The kitchen is equipped with four cabinets, a fridge, a kitchen table, a microwave, and a stove. The third cabinet from the left is empty. Inside the fridge, there are three plates and two cupcakes. The second cabinet from the left houses a water glass, while the first cabinet contains a bottle of wine. A salmon is cooking in the microwave, and another salmon, along with a plate, is in the stove. The fourth cabinet from the left holds a condiment bottle. 
The living room features a cabinet, a sofa, a coffee table, and a desk. The cabinet stores two wine glasses, a dish bowl, and an apple. On the coffee table, there is a dish bowl, a plate, a wine glass, and a remote control. 
The bathroom is furnished with a bathroom cabinet, which is currently empty. 
Actions taken by Mark: Mark is situated in the kitchen. He strides towards the stove, opens it, then promptly closes it. Subsequently, he moves towards the refrigerator, opens it, and then shuts it. He then proceeds to the fourth kitchen cabinet, opens it, and then securely closes it. Finally, he advances towards the microwave. 
Question: If Mark has been trying to get an apple, which one of the following statements is more likely to be true? (a) Mark thinks that the apple is not inside the cabinet. (b) Mark thinks that the apple is inside the cabinet. Please respond with either a or b.