Karen and William own a condominium as joint tenants. They purchased the property for $500,000 with William contributing $350,000 and Karen contributing $150,000. What statement is correct?

a. If William elects to sell his interest in the condo to his brother, he does not need Karen's consent to do so.
b. If Karen were to die, her ownership interest in the condo will form part of her estate.
c. Karen and William each have 50% ownership interest in the condo.
d. If Karen were to die, she could bequeath her interest in the condo to her 35-year-old son Craig on a deferred basis.