张三是家具经销商，因资金周转困难，便向李四借款30万元，购买了一批家具，并销售给了王五，约定价款为40万元，但王五未付款。后来，李四请求张三还钱，张三说因为王五未支付贷款，所以无力偿还，故李四欲对王五直接起诉。

下列说法正确的有哪项( )

A．李四应向张三所在地的基层人民法院起诉

B．法院可以追加张三为第三人

C．如果张三在法庭证明自己曾向王五以书面方式催过货款，则张三不属于怠于行使已到期债权，法院应驳回李四的起诉

D．以上说法都不正确

According to the talk, who owned the receivers in the early days of radio

A．Military communications officers.

B．People who treated radio technology as a hobby.

C．People who lived in big cities.

D．People with an interest in music