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 with a wine glass on it. 
The bathroom houses a cabinet, which is currently empty. 
The living room is furnished with a cabinet, a coffee table, a sofa, and a desk. Inside the cabinet, you'll find a water glass, an apple, a cupcake, two wine glasses, and two plates. 
The kitchen is equipped with a fridge, a stove, a kitchen table, and a microwave. The fridge contains two bottles of wine, an apple, and a dish bowl. Inside the stove, there is a plate and a cupcake. The microwave houses a salmon and a condiment bottle. 
Actions taken by John: John is situated in the bathroom. He proceeds to the kitchen, advances towards the microwave, opens it, subsequently closes it, then heads towards the living room and approaches the cabinet. 
Question: If John think there isn't a water glass inside the cabinet, which one of the following statements is more likely to be true? (a) John has been trying to get a water glass. (b) John has been trying to get a bottle of wine. Please respond with either a or b.