Stepping off the bus , a familiar face caught my attention . I was n't sure if he 'd remember me , but seconds later I figured . He did . It 's been two years now since we stayed in Weir House .
What may be the reason why they knew he recognized them ?
Pick the best answer from the following options:
A. He laughed .
B. He ignored them .
C. He smiled .
D. He pretended to be on the phone .


C