Choose the most logical order of sentences from among the four given choices to construct a coherent paragraph.
A. Lymphoma can easily spread throughout the body, so patients whose disease appears to be confined to one or a few lymph nodes may have collections of cancerous cells elsewhere in the body that are not big enough to be detected by the tests used in staging the disease.
B. Treatment of lymphoma is tailored to each individual patient, depending on the type of lymphoma present, how fast it grows, and how far it has spread.
C. In general, lymphomas that derive from 'T' cells are more difficult to treat than 'B' cell lymphomas, and patients aged over 60 are less likely to be cured than younger patients.
D. For this reason, the treatment of choice for lymphoma is usually chemotherapy - drugs given by mouth or through the veins to destroy the rapidly proliferating cancer cells throughout the body.

Correct option is C

· Explanation:
· Sentence B introduces the concept of lymphoma treatment, explaining that it varies depending on the type, growth rate, and spread.
· Sentence A expands on the challenge of accurately staging the disease, explaining why treatment must consider the possibility of undetected cancerous cells.
· Sentence C then highlights specific difficulties in treating different types of lymphomas and patient age factors.
· Finally, D justifies why chemotherapy is generally the preferred treatment to address cancer throughout the body.
· Thus, the coherent order is BACD.