please help me here.

IRR final answer needs to be in EAR

NPV correct answers.

I have recieved different answere from experts not sure which one are correct.

for IRR, bond 1 15.31% or -90.69%

bond 2: 20.81% or 19.7%

bond 3: 24.82% or 0.00455%

for NPV I get: bond 1 $8,629.09 or $9,907,00 or $10,620,895 or $9,928,796

bond 2 $2,745.14 or $ 4,909,000 or $ 5,967,013, $5,162,890

bond 3 $ 1,184.87 or $4,046,576 or $ 3,326,470.

so confused please help!

IMITEDMIAI DATE OE DETIIDN Net Present Value IMITEDMIAI DATE OE DETIIDN Net Present Value