A: Hello, this is Betty. B: Hi, Betty. Larry here. How many smoke detectors are in your apartment? A: Actually, I have two. B: Are the batteries fresh? A: Both batteries are good. B: Great. I need to come by and check them myself. A: No problem, when are you coming by? B: Thursday at noon. I'll let myself in if you're not there. A: Okay, remember to lock my door when you leave. B: I'll be in and out of there in just a few minutes.