Which console.log will compile and which will cause an error?

type Person = { 
    name: string
    age: number
}

type Employee = { 
    name: string
    email: string
} 

type A = Person | Employee;
type B = Person & Employee;

const a: A = {
  name: 'John',
  age: 20,
  email: 'john@test-email.co.uk',
}

const b: B = {
  name: 'John',
  age: 20,
  email: 'john@test-email.co.uk',
}

console.log('A:', a.name, a.age, a.email)
console.log('B:', b.name, b.age, b.email)