Two investments have the following pattern of expected returns:

Investment A

Year $1$ Year $2$ Year $3$ Year $4$ Year $4($Sale$)$

BTCF $$5,600$ $$10,600$ $$12,600$ $$15,600$ $$126,000$

Investment B

Year $1$ Year $2$ Year $3$ Year $4$ Year $4($Sale$)$

BTCF $$2,600$ $$4,600$ $$1,600$ $$5,600$ $$186,000$

Investment A requires an outlay of $$116,000$ and Investment B requires an outlay of $$126,000.$

Required:

a$.$ What is the BTIRR on each investment?

b$.$ If the BTIRR were partitioned based on BTCFo and BTCFs$\text{'}$ what proportions of the BTIRR would be represented by each?

c$.$ Which investment would be preferable?