awkward.....

how do u react when u're walking down a coridoor at work.... and at the far end, you spot someone u briefly know (hi bye type of aquaintance)...

a) do u start smiling the time u spot them

b) wait till you're closer then smile... if yes, how many steps away from that person do u start smiling....

c) when the person smiles back at you and u still have 5 steps left... do u look down at the ground? or ...?