What is the internal rate of return for the following:

(A) an initial outlay of $11,000 resulting in a single cash inflow of $25,648 in 11 years.

(B) an initial outlay of $9500 resulting in a cash inflow of $1912 at the end of each year for the next 8 years.

(C) an initial outlay of $10,500 resulting in a cash inflow of $1800 at the end of year 1, $4900 at the end of your 2 and $8400 at the end of year 3.