Match the male accessory gland with its characteristic.
| Column I | Column II |
|---|---|
| (a) Seminal vesicles | (i) A single, large gland surrounding the urethra |
| (b) Prostate gland | (ii) Paired glands that add fluid rich in fructose to semen |
| (c) Bulbourethral glands | (iii) Their secretion helps in the lubrication of the penis |
| (d) Seminal plasma | (iv) The fluid part of semen, rich in calcium and certain enzymes |