根据情景完成对话

Rosa: Do you have black bags?

Mr.Smith: No,   1   we have blue bags. Do you like these?

Rosa:   2  ,I do. How much are they?

Mr.Smith: They're thirty   3  .

Rosa: Oh, that's too dear. How about twenty dollars?

Mr.Smith: That's OK.

Rosa:   4   the money.

Mr.Smith:   5   you.

下图是固体物质甲的溶解度曲线，请据图回答下列问题。

（1）t₂℃时，甲的溶解度为______g。

（2）t₃℃时，若将40g甲物质放入到100g水中，充分溶解后，所得溶液在溶解度曲线图中可表示为_______（填“A”或“B”）点 ,若将其降温到t₁℃，能析出晶体________g。