"You will certainly see people of every age, size and shape." "Shape" here refers to people being （）

A．If you know your cycle you can make good use of time.
B．If you know your cycle you can change it to fit your life.
C．Father and son do not necessarily have the same cycle.
D．Having a habit of doing something can make people affected less by their energy cycl

A．Either of them gets up late in the morning.
B．Husbands and wives have different cycles of energy.
C．Either of them wants to change the cycle of the other.
D．They do not know which cycle the other has.