Hello, my answer for this question is 28, I would like to know if it is right.

Question 6 Not yet answered Marked out of 1.00 P Flag question The following shows the activities going on during the layover of a plane: Activity A: Baggage offload, duration: 12 minutes Activity B: Loading Baggage, duration: 19 minutes Activity C: Aircraft Check, duration: 16 minutes Activity D: Cabin cleaning, duration: 19 minutes Activity E: Passenger boarding, duration: 30 minutes The following shows the network diagram of the above activities. The airline likes to start cabin cleaning as late as possible without impacting the duration of the layover. What is the latest start time of cabin cleaning? A B E D