What's inside the apartment: The apartment consists of a bedroom, a bathroom, a living room, and a kitchen. 

In the bedroom, there is a coffee table and a desk. 

The bathroom houses a cabinet, which is currently empty. 

The living room is furnished with a desk, a cabinet, a sofa, and a coffee table. The cabinet contains a bag of chips, a dish bowl, a cupcake, a remote control, and a water glass. On the coffee table, there is a wine glass and a book. 

The kitchen is equipped with four cabinets, a microwave, a fridge, a stove, and a kitchen table. The third cabinet, from left to right, is empty. The fourth cabinet holds a wine glass and a bottle of wine. The first cabinet contains a water glass, a condiment bottle, and a wine glass. Inside the microwave, there is a salmon, a cupcake, and a condiment bottle. The fridge has a dish bowl. The second cabinet houses an apple and a water glass. Lastly, there is a plate inside the stove. 
Actions taken by John: John is situated in the kitchen. He strides towards the fourth kitchen cabinet, opens it, subsequently closes it, and then proceeds towards the microwave. 
Question: If John think there isn't a salmon inside the microwave, which one of the following statements is more likely to be true? (a) John has been trying to get a salmon. (b) John has been trying to get a dishbowl. Please respond with either a or b.