Read the following statements and choose the correct option.
Statement-A : Under unfavourable conditions, Amoeba shows encystation.
Statement-B : Amoeba divides by multiple fission on return of favourable conditions.
Under unfavourable condition, the Amoeba withdraws its pseudopodia and secretes a three-layered hard covering or cyst around itself. This phenomenon is termed encystation. When the conditions are favourable the cyst is shed off and the Amoeba divides by multiple fission.