The market gives the following prices for the three STRIPS with par value of $$100$ :

Use the above information to answer questions $(A)-(C).$

Question A$.$ What are the spot interest rates for maturities of year $1,2$ and $3,$ respectively?

Question B$.$ You have an asset paying $10,15$ and $20$ million dollars in year $1,2$ and $3,$ respectively. What is the present value of this asset?

Question C$.$ A dealer is offering to sell you $3-$year STRIPS with a par value of $$100$ million at $$89\mathrm{.}42$ million. Does this present an arbitrage opportunity?

a$.$ Yes

b$.$ No