Given the question: Read the article and select the best answer. Article: Mum, it's me. Hopefully, this Mothering Sunday you will get to hear those three words. I will, of course, try to phone you. I hope we will be able to speak for the allowed 10 minutes. But I suspect many inmates will be using the phone, so if I don't call and if we don't speak, then this is what I would have said: It's not your fault that I am here. I know that deep in your heart you have questioned whether my current circumstance is somehow your fault, if the reckless stupidity of my past is somehow a failure on your part. It is not. Only one person is to blame, only one person should hurt -- me. You have always taught me that when the room goes dark, you can wait for the lights to be switched back on or you can search in the dark and turn the light on yourself. You are my light. You always have been and always will be. There is nobody I admire more, nobody I have strived harder to please in my life, which is why my current failure hurts me so much. I am so sorry that I will not be there to see you, but I want you to know that now, as always, you are here with me. In my darkest hours, and in the coldest loneliness of my past few months, my mind has so often wandered to the past, to when it was you and me -- and I have been able to smile. Yours is the strength that I draw upon. A parent's job is to make sure that they pass on the best of themselves to their children. You have done that. It is the inner you in me that will get me through _ . I have failed you so epically, but you have never failed me. If I think back to the tears I shed when Dad left, all those years ago, I see you through their misty glaze. You holding me and you telling me we'd be OK, and we will be. We are and always will be the best team. Childhood heroes such as footballers, actors and rock stars are _ . If the job's done right, a child's heroes should be their parents -- you are mine. The strength you showed after the divorce from Dad to find your biological parents, to go to university and get your teaching qualifications, to begin your... Question: According to the passage, what made the author most upset at present? Options: A: Losing his freedom temporarily. B: Being unable to phone his mother. C: Failing to live up to his mother's expectations. D: Having no chance to spend the weekend with mother.
The answer is:
C