Identify the correct citation for this source the first time it appears in your paper:

Ashcroft, B$.,$ Griffiths, G$.$ & Tiffin, H$.(1989).$ The empire writes back: theory and practice in post$-$colonial literatures. London, England: Routledge.

Select one:

$$ a$.$ Therefore, readers need to remember that "the first'post$-$colonial society to develop a 'national' literature was the USA" $($Ashcroft et al$.,1989,$ p$.15).$

$$ b$.$ Therefore, readers need to remember that "the first post$-$colonial society to develop a 'national' literature was the USA" $($Ashcroft$,$ Griffiths, & Tiffin, $1989,$ P$.15).$

$$ c$.$ Therefore, readers need to remember that "the first post$-$colonial society to develop a 'national' literature was the USA" $($Ashcroft$,$ Griffiths & Tiffin, P$.15).$