Secretions from which one of the following are rich in fructose, calcium and some enzymes?

Male accessory glands in humans are the seminal vesicles, prostate gland, and the bulbourethral glands. Secretion of accessory sex glands is called seminal plasma. It is rich in fructose (source of energy), citrate, prostglandins, calcium and certain enzymes. Seminal fluid along with the sperms is called semen or seminal fluid. It also maintains the viability and motility of sperms as it provides proper pH (approximately pH 7.5) and ionic strength. So, the correct answer is 'Male accessory glands'