阅读下面短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
B
Today is Sunday, June 14th．Andy is planning a trip to South Island with his family．He loves doing water sports, especially swimming．However, his parents won’t allow him to swim when the highest temperature is below 30℃．Here is the weather forecast(预报) for South Island for the coming week.

On which days can Andy go swimming?

A．June 17th and June 18th．

B．June 19th and June 20th．

C．This Tuesday and Wednesday．

D．Tomorrow and the day after tomorrow．

What should Andy’s family take with them if they go to South Island on June 21st?

A．Kites．

B．Sunglasses．

C．Umbrellas．

D．Sun hats．