Jacque Derrida, of Grammatology (The Written Being/The Being Written)

Jacque Derrida, Of Grammatology (The Written Being/The Being Written)
-According to Derrida,we should not view speech as more fundamental than reading and writing for all of the following reasons except which?

A) Reading and writing originate new meanings every bit as much as speech does.
B) The focus on the present (when speech acts originally occur) is an arbitrary bias.
C) Heidegger demonstrated once and for the true nature of being and it applies to all times.
D) The notions of presence and being are too unclear to ground important distinctions.