Danish reports to work at 09 30. The table shows the different travel options he can take to go to work.

	From	To	Mode	Duration
Option A	Home	Interchange	Walk	15 min
Option B	Home	Interchange	Bus	10 min
Option C	Interchange	Workplace	Bus	1 h 20 min
Option D	Interchange	Workplace	MRT	1 h 10 min

This morning, Danish left home at 07 55 and reached his workplace 10 minutes before his reporting time. Which travel options did he take?

1. Find the time Danish reached his workplace.

Reporting time is $09\ 30$. Reaching $10$ minutes before means he arrived at $09\ 20$.

2. Calculate the total duration of the journey.

From $07\ 55$ to $09\ 20$:
$07\ 55$ to $08\ 00$ is $5$ minutes.
$08\ 00$ to $09\ 00$ is $60$ minutes.
$09\ 00$ to $09\ 20$ is $20$ minutes.
Total duration = $5 + 60 + 20 = 85$ minutes.

3. Determine which combination of travel options gives a total of 85 minutes.

He must take one option from Home to Interchange (A or B) and one from Interchange to Workplace (C or D).
Option A + Option C = $15 + 80 = 95$ minutes
Option A + Option D = $15 + 70 = 85$ minutes
Option B + Option C = $10 + 80 = 90$ minutes
Option B + Option D = $10 + 70 = 80$ minutes
Since the total duration is $85$ minutes, he took Options A and D.