• Why is the letter being sent?

Hi
I read the following in a TOEIC book:

“Dear Subscriber,

Welcome to our first edition of the Healthy Living Newsletter. We hope you will find the topics both entertaining and beneficial. The newsletter will be sent out every two months and will include articles of special interest, the latest health-care updates, and profiles of the outstanding medical professionals who work here at Tanaka Hospital. Each newsletter will also include a schedule of our new series of free Healthy Living classes.

The initial class, entitles “How to Prevent Lower-Back Pain will be held on Wednesday evening, September 15, in the exercise room on the first floor of the hospital. The class will begin promptly at 6 p.m. and will last 2 hours with a 10-minute break. Participants should come prepared with comfortable clothing and an exercise mat. The room will open approximately 30 minutes before the class.

If you would like to attend, please call the hospital receptionist between 8:30 a.m. and 5:30 p.m., Monday to Friday to reserve a space. If you have family or friends who would like to receive our newsletter, please have them sign up on our Web site at www.tanakahospital.org.

Sincerely,
The staff of Tanaka Hospital

165. Why is the letter being sent?
(A) To introduce new services offered by a hospital
(B) To solicit articles for a new publication
(C) To provide information about new medications
(D) To announce the opening of an exercise studio

(Answer: A)” ((Test 8, ETS TOEIC Test RC 1000))

I think A is correct because
#1. “The letter” in the above question refers to “the (first edition of the) newsletter”, and
#2. “new services” in the choice A refers to the “new series of free Healthy Living classes”.

What do you think? Do you agree with me?
Thanks in advance.