Edward Said's Orientalism was published first.
Gayatri Chakravorty Spivak's essay “Can the Subaltern Speak?” came after it.
Judith Butler's Gender Trouble was published after Spivak's essay.
Homi K. Bhabha's The Location of Culture came later.
Therefore, the correct chronological order is:
\[
\textit{Orientalism}
\rightarrow
\text{``Can the Subaltern Speak?''}
\rightarrow
\textit{Gender Trouble}
\rightarrow
\textit{The Location of Culture}.
\]
So the correct sequence is:
\[
B,\ D,\ A,\ C.
\]