Harvey Hadley Conveyed a Parcel of Property in the City

Essay

Harvey Hadley conveyed a parcel of property in the city of Fairlywell Downs to Carl Bland and Dirk Pitts. The granting clause of the deed stated that Carl and Dirk take the property jointly.
Neither Carl nor Dirk signed the deed.
a. What is the nature of the joint ownership interest of Carl and Dirk? Explain?
b. Of what impact is it that neither Carl nor Dirk signed the deed? Explain?
c. If the property were still in escrow, of what effect would a recorded tax lien be?​