A.1B.0.5C.2D.3
A.(Tz+30℃)~(Tz-30℃)B.(Tz+10℃)~(Tz-10℃)C.(Tz+20℃)~(Tz-20℃)D.(Tz+25℃)~(Tz-25℃)
A.5B.7C.10D.14