Part 2 must be a positive response which leads them surprised and amazed. So, options $A$ & $B$ are eliminated. (irate means angry and curtly means abrupt)
Also, part 1 must be negative.
So, only option D matches.
Amiably & Affably are synonyms to each other.
Querulous:- impatient, moody, tempered, ill-natured etc
Correct Option: "D"