Answer asap pls

If the equity beta is 2 and the debt to asset ratio is 0.5; what should be the unlevered beta? You can assume a 40% tax rate. Note: the debt-to-asset ratio is different than the debt-to-equity ratio!

a) 1.5

b) 1.3

c) 1

d) 2

e) 1.25

f) 1.20