题目内容：
根据以下内容，回答题。Are you suffering from RAGWEED ALLERGIES?
Are you one of those people who suffer from:
Sneezing?
runny, itchy noses?
red, watery, itchy eyes?
During the latter part of the summer months...
The Research Institute of Ragweed Allergies is currently conducting a study and is asking volunteers to participate in testing an experimental drug.
Those who pass the qualification procedure will receive compensation for his/her part in contributing to the study.
Call: 905-629-3333 (ext.1 ) or Toll free: 1-800-RIRA-5544
E-mail: volunteer@researchinstitute-ragweed.com
Regular hours of operation: Monday to Friday: 9 a.m. to 6 p.m.
Saturday: 9 a.m. to 1 p.m.
Research Institute of RA
4520 Dixie Rd in Missisauga
2 blocks south of Eglington Ave
www.researchinstitute-ragweed.com
What is the primary reason for taking out this notice? A．To announce a medical breakthrough in curing ragweed allergies
B．To inform the public about the spread of a new type of an allergy
C．To recruit people who are willing to come forward for a medical cause use
D．To provide the results of a test conducted by the research institute
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