题目内容：
根据以下内容，回答题。Bruce Health，Treasurer
Oberton Community Council
1 1 1 Wilow Street，#501
Oberton，KY
July 17th，2006
Dear local entrepreneurs，
At the last Oberton Community Council meetin9，town residents voted to install an outdoor swimming pool on the grounds of the Oberton Community and Recreation Center．However．we need your help in order to make this resolution a reality．
Beginning August 1st，the Oberton Community Council will be collecting donations from area businesses．There are three contribution levels，and contributors at each level will receive recognition and prizes as specified below：
Level l($50一$199)：A mention in the monthly Oberton Community Newsletter
Level 2($200一$499)：Above+a gift certificate to an area restaurant
Level 3($500+)：Above+a reserved seat for the opening ceremony for the new swimming pool
Remember，Oberton residents are counting on your support!For information on how to contribute，contact me directly at 555—29 1 1，or simply mail your donation in the form of a cheek or money order to the address at the top of this letter．
Thank you，
Bruce Heath
To whom was the letter sent? A．Residents of Oberton
B．A construction company in Oberton
C．Members of the Oberton Community Council
D．Business owners in Oberton
参考答案：
答案解析：