What's inside the apartment: The apartment consists of a bedroom, kitchen, living room, and bathroom. 
In the bedroom, there is a sofa with a book on it and a cabinet containing a remote control, a wine glass, two dish bowls, a bottle of wine, and a condiment bottle. 
The kitchen is equipped with a fridge, sofa, dishwasher, eight cabinets, a stove, a microwave, and a table. The fridge contains an apple, three plates, and a bottle of wine, while a bag of chips rests on the sofa. Inside the dishwasher, there is a plate, a water glass, and a wine glass. The third and fourth cabinets, as well as the first, second, fifth, sixth, and seventh cabinets, from left to right, are empty. The eighth cabinet houses a wine glass. The stove contains a salmon, the microwave is empty, and the table is adorned with a plate, a wine glass, two apples, two books, and a cupcake. 
The living room features a sofa with a water glass and a book on it, and a desk. 
Lastly, the bathroom contains a cabinet, which is currently empty. 
Actions taken by Charles: Charles is situated in the bathroom. He proceeds towards the kitchen and approaches the first kitchen cabinet. He opens it, then promptly closes it. Charles then makes his way to the bedroom before returning to the kitchen. He approaches the fifth kitchen cabinet, opens it, and then closes it. He repeats this action with the sixth kitchen cabinet. Charles then heads towards the dishwasher, opens it, and then closes it. He opens the second kitchen cabinet and then closes it. He walks towards the fridge, opens it, and then closes it. He opens the eighth kitchen cabinet and then closes it. He walks towards the seventh kitchen cabinet, opens it, and then closes it. Finally, he is about to open the microwave. 
Question: If Charles has been trying to get a salmon, which one of the following statements is more likely to be true? (a) Charles thinks that the salmon is inside the microwave. (b) Charles thinks that the salmon is not inside the microwave. Please respond with either a or b.