Mary and Joseph: Scenario for two questions

Mary and Joseph are married. Mary trades and Joseph has a fulltime job. In the tax year 2019/20 Mary has trading income of 10,000 and Joseph has employment income of 43,500. The UK tax rules allow the transfer of personal allowances between spouses and civil partners.

Which is the correct amount for Joseph's income tax liability for the tax year 2019/20?

6,200

5,950

3,700

250