Choose the correct alternative and complete the statements :
(i) ………………. mobility stands for change of social position.
(Horizontal / Vertical / Intergenerational)
(ii) ………………. mobility means that one generation changes its social status in contrast to previous generation.
(Vertical / Intergenerational / Intragenerational)
(iii) ………………. mobility takes place in the lifespan of one generation.
(Vertical / Intergenerational / Intragenerational)