You observe the following rates for the Swiss Franc, US dollar, and British Pound:

$$\frac{0\mathrm{.}9804}{C}HF$;$\frac{0\mathrm{.}70}{\text{\$}}.$ You also notice a bank currently offering CHF $1\mathrm{.}008/$

a$.$ Assuming the bid$-$ask spread is zero, given this information, is there a possibility for triangular arbitrage?

b$.$ Why or why not?

c$.$ If there is an opportunity, suppose you start with $$1$ million, how much could you earn?