please help a$,$b$,$c

$6*.$ As a foreign exchange trader at U$.$S$.$ Bank, one of your Canadian customers would like a euro $()$ quote on Canadian dollar $($CAD$).$ Given the current market rates in the following table:

a$).$ What bid and ask $$ cross rates would you quote on spot CAD : $S(\frac{}{C}AD)?$

b$).$ What is the bid$-$ask spread on euro CAD?

$\backslash$table$[[$Rate$,$Bid,Ask$],[$S$($CAD$/$$$),S(\frac{\text{C}\text{A}\text{D}1\mathrm{.}3090}{\text{\$}\text{b}\text{i}\text{d}}),S(\frac{\text{C}\text{A}\text{D}1\mathrm{.}3980}{\text{\$}\text{a}\text{s}\text{k}})$