How has Tesco expanded its customer base?

(A)
By its advertisement. 
(B)By its website.  
(C)By its TV commercial.  
(D)By its publication.

Tesco is the largest British retailer and is also the world’s third largest grocery retailer with outlets across Europe, USA and Asia. The business began in 1919 with one man, Jack Cohen, selling groceries from a stall in the East End of London. Jack bought surplus stocks of tea from a company called T.E. Stockwell. T.E. Stockwell and Cohen combined their names to brand the tea Cohen originally sold TESCO tea. In 1929, the first Tesco store opened in north London. Tesco has expanded since then by a combination of acquisition of new stores, retail services and by adapting to the needs of consumers. Tesco has net profits (before tax) of around £3 billion. Tesco’s primary aim is “to serve the customer”. Keeping existing customers happy is important, as they are more likely to return. This is more cost effective for the business than acquiring new ones. In the UK Tesco now has over 2,200 stores ranging from the large Extra hypermarket style stores to small Tesco Express high street outlets. Tesco’s original product range of grocery and general merchandise has diversified to include banking, insurance services, electrical goods as well as telephone equipment and airtime. This move towards “one stop shopping” means customers can meet all their purchasing needs from one place. Tesco has also expanded its customer base through its website which attracts one million regular users.
 

這篇在講英國的大型連鎖超級市場:Tesco ，答案請見最後一句關鍵字

retailer:(n.)零售商

outlet:(n.)銷路；商店，商行

stall(n.)貨攤，攤位

surplus(a.)過剩的，剩餘的

net profits淨利潤

diversify(v.)[daɪˋvɝsə͵faɪ] 使…多樣化

merchandise(n.)商品，貨物

insurance(n.)保險；保險契約