please answer a,b, and c

Spot exchange rate: \begin{tabular}{lc} Bid rate & CHF1.2554= USD1.00 \\ Ask rate & CHF1.2599= USD1.00 \\ 1-month forward & 10 to 15 \\ 3-months forward & 14 to 22 \\ 6-months forward & 20 to 30 \\ \hline \end{tabular} Andreas Broszio (Geneva). Andreas Broszio just atarted as an analyst for Credit Suisse in Geneva, Switzeriand. Ho teceives the following quotes for Swiss francs (CHF) againgt the dollar (USD) for apot, 1 month forward. 3 months forward, and 6 monthe forward: The cument one-year U:S:T-Bill rate is 4.2%. a. Calculate cutrlght quotes for bld and ask and tho number of points apread botween each. b. What do you notice about the spread as quotes evolve from spot loward 6 manths? c. What is the frionth Swiss bili rato? a. Coiculate outright quoles for bid and ask and the number of points spread botween nach Calculate the cutright quotes for bid and usk and the number of points spread botween each below!. (Round to four decimal places.)