Based on data from the refrigerant-134a tables, the Joule-Thompson coefficient

Based on data from the refrigerant-134a tables, the Joule-Thompson coefficient of refrigerant-134a at 0.8 MPa and 100oC is approximately
(a) 0
(b) 25oC/MPa
(c) 11oC/MPa
(d) 8oC/MPa
(e) 26oC/MPa