Choose the right preposition to complete the sentence. i'm look. granny, so i will not arrive this month. a) at b) after b) up г) for

I'm looking  my granny, so I will not arrive this month. b) after

B) after
но тут раз уж am, то и не look, a looking должно быть
т.е. I'm looking after my granny, so I will not arrive this month.