International Insurance Company had purchased a tranche of mortgage securities in early $2021.$ This particular security had not traded since the purchase during $2021.$ The company has no plans of selling the security in the near term. For the December $2021$ year$-$end, the company decided to fair value the security through its own present value model, using the contracted future coupon payments and discounting it by the market yield for similar types of mortgage securities at the end of $2021.$ In its $10$K footnotes, the company would classify this security as what?

a$.$

Available for Sale: Level $2$

b$.$

Available for Sale: Level $3$

c$.$

Trading: Level $3$

d$.$

Trading: Level $2$

e$.$

Held to Maturity $($valued at cost$)$