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 dish bowl placed on the coffee table. 
The kitchen is equipped with four cabinets, a fridge, a kitchen table, a microwave, and a stove. The first and third cabinets are empty, while the second cabinet contains an apple. The fridge houses a plate and two salmons. A cupcake can be found in both the microwave and the stove. The fourth cabinet stores a wine glass and a bottle of wine. 
The living room features a cabinet, a sofa, a coffee table, and a desk. The cabinet is filled with four water glasses, a bag of chips, an apple, a condiment bottle, and a wine glass. Two remote controls rest on the coffee table. 
Lastly, the bathroom contains a cabinet, which is currently empty. 
Actions taken by William: William is situated in the bedroom. He proceeds towards the kitchen, making his way to the third kitchen cabinet. He opens it, then promptly closes it. He then navigates to the first kitchen cabinet, opens it, and closes it as well. His next destination is the fourth kitchen cabinet, which he also opens and closes. William then strides towards the fridge, opens it, and shuts it. He then heads to the second kitchen cabinet, opens it, and closes it. He then moves towards the stove, opens it, and closes it. Finally, he walks towards the microwave, preparing to open it. 
Question: If William has been trying to get a water glass, which one of the following statements is more likely to be true? (a) William thinks that the water glass is inside the microwave. (b) William thinks that the water glass is not inside the microwave. Please respond with either a or b.