Read the following article and answer the question by choosing from the options.

I ' m waiting patiently till the 21st . Though i was home just last week , i miss home already . I did n't get to see my friends last week because i was there on business for just a day . I did n't have time to go out with my friends because i spent the entire night at home with my family .

What may be a reason for them missing home ?
Possible answers:
(a). They had missed their family ..
(b). They are lonely where they live at now ..
(c). They have n't seen their friends in a while ..
(d). None of the above choices .....A:
(c).