Dismissal in compulsory winding up

Lupo has been employed by Snake Ltd for four years.
He was aware that the company was experiencing trading difficulties but is still shocked to be sent home without notice when Snake Ltd is compulsorily wound up.
He sues for wrongful dismissal but at the hearing the liquidator proves that he has discovered that Lupo has embezzled £20,000 from the company.
Will Lupo be entitled to any compensation for his dismissal?

Yes, he has been constructively dismissed
Yes, he has been wrongfully dismissed without notice and no regard should be paid to the embezzlement discovered later
No, the employment contract was frustrated by Snake Ltd’s liquidation
No, Snake Ltd was justified in its dismissal of Lupo

Answer is D.
Questions
1) The answer says it’s a wrongful dismissal and breach of contract but due to his conduct it’s considered justified dismissal.
If he didn’t embezzle later, would it wrongful as it’s breach of contract because he was entitled to 4 weeks notice and redundancy pay and didn’t get?

2)Also I know any unpaid wages and holiday pay are given to employees as preferential creditors, what about redundancy pay?

3) in voluntary winding up contrary to compulsory winding up employees are not automatically dismissed, if however they are dismissed are they entitiled to redundancy and notice?