****'s school lasts 6 hours 30 minutes excluding breaks and lunch. Break period is of 15 minutes and lunch hours is 30 minutes. There are 2 break periods. What time does the school starts if it ends at 4:30pm.

Question

$\begin{array}{11} (a)\;9:00 am \\ (b)\; 8:30am \\ (c)\; 9:30am \\ (d)\; 8:00 am \end{array}$