E$16\mathrm{.}1($LO $1,2)($Investment Classifications$)$ For the following investments, identify whether they are:

Trading debt securities$.$

Available$-$for$-$sale debt securities$.$

Held$-$to$-$maturity debt securities$.$

None of the above.

Each case is independent of the other.

a$.$ A bond that will mature in $4$ years was bought $1$ month ago when the price dropped. As soon as the value increases, which is expected next month, it will be sold.

b$.10\%$ of the outstanding stock of Farm$-$Co was purchased. The company is planning on eventually getting a total of $30\%$ of its outstanding stock.

c$.$ Bonds were purchased in December of this year. The bonds are expected to be sold in January of next year.

d$.$ Bonds that will mature in $5$ years are purchased. The company would like to hold them until they mature, but money has been tight recently and they may need to be sold.

e$.$ Preferred stock was purchased for its constant dividend. The company is planning to hold the preferred stock for a long time.

f$.$ A bond that matures in $10$ years was purchased. The company has committed the money for an expansion project planned $10$ years from now.