Cycticerci remains alive for 5-6 years and is then calcified by the host pig. Single cysticercus is spherical, measuring 1–2 cm in diameter, and contains an invaginated protoscolex. The central space is filled with fluid like a bladder, hence it is also called bladder worm. Cysticerci are usually formed within 70 days and may continue to grow for a year. Hence, the correct answer is option C.