What is the primary reason that prostate cancer rarely metastasizes to the bowel?

Question

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A)Despite its proximity to the rectum, metastasis to the bowel is uncommon in prostate cancer, because a tough sheet of tissue, the Denonvilliers fascia, acts as an effective physical barrier between the bowel and prostate. A rectourethral fistula may develop as a result of treatment for prostate cancer. The inferior vesical artery and capsular artery provide blood to the prostate but not the bowel.
B)Despite its proximity to the rectum, metastasis to the bowel is uncommon in prostate cancer, because a tough sheet of tissue, the Denonvilliers fascia, acts as an effective physical barrier between the bowel and prostate. A rectourethral fistula may develop as a result of treatment for prostate cancer. The inferior vesical artery and capsular artery provide blood to the prostate but not the bowel.
C)Despite its proximity to the rectum, metastasis to the bowel is uncommon in prostate cancer, because a tough sheet of tissue, the Denonvilliers fascia, acts as an effective physical barrier between the bowel and prostate. A rectourethral fistula may develop as a result of treatment for prostate cancer. The inferior vesical artery and capsular artery provide blood to the prostate but not the bowel.
D)Despite its proximity to the rectum, metastasis to the bowel is uncommon in prostate cancer, because a tough sheet of tissue, the Denonvilliers fascia, acts as an effective physical barrier between the bowel and prostate. A rectourethral fistula may develop as a result of treatment for prostate cancer. The inferior vesical artery and capsular artery provide blood to the prostate but not the bowel.

What Is the Primary Reason That Prostate Cancer Rarely Metastasizes