Zeynep and her friends are at an indoor swimming pool in İzmir for a school sports trip. The coach notices that some swimmers have been in the pool since 9 a.m., but they took a 10-minute break at 10:30 a.m. Which of the following sentences about their training is correct according to the situation?
A)The swimmers have been training since 9 a.m., so they trained for exactly 1 hour and 30 minutes before the break.
B)The swimmers started training at 9 a.m., but the break at 10:30 a.m. means they have NOT been training continuously since 9 a.m.
C)The swimmers are still in the pool after the break, so they have been training since 9 a.m. without interruption.
D)The swimmers took a break, so the correct statement should be 'they had been training until 10:30 a.m.' not 'since 9 a.m.'