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. 
The kitchen is equipped with four cabinets, a fridge, a kitchen table, a microwave, and a stove. The third cabinet from the left houses a water glass and a dish bowl. Inside the fridge, there are two apples, a salmon, a plate, and a dish bowl. The second cabinet from the left contains a water glass, a bag of chips, a condiment bottle, and a dish bowl. The first cabinet from the left holds a wine glass, a bottle of wine, and a condiment bottle. The microwave contains a salmon, and there is a cupcake in the stove. The fourth cabinet from the left has a plate. 
The living room features a cabinet, a sofa, a coffee table, and a desk. Inside the cabinet, there are two apples and four books. A plate and a remote control are placed on the coffee table. 
The bathroom is furnished with a bathroom cabinet, which is currently empty. 
Actions taken by Mark: Mark is situated in the bathroom. He proceeds towards the kitchen, making his way to the stove. He opens and then closes the stove. Subsequently, he strides towards the fourth kitchen cabinet, opens it, and then shuts it. He then moves to the second kitchen cabinet, opens and closes it, before doing the same with the third kitchen cabinet. Finally, he heads towards the first kitchen cabinet, opens and closes it, and is about to open the microwave. 
Question: If Mark has been trying to get a salmon, which one of the following statements is more likely to be true? (a) Mark thinks that the salmon is not inside the microwave. (b) Mark thinks that the salmon is inside the microwave. Please respond with either a or b.