The default tax withholding is 10%, but 10% might not be enough to cover the marginal tax rate on this distribution so you might want to have more taken out. Your options are to have the default 10% withheld, nothing withheld or more than 10% withheld, but having less than an amount corresponding to your marginal tax rate withheld might result in an underpayment penalty when you file your tax return.
