Which of the following is valid?

Question $35$ options:

A$)$

float y;

double z;

z $=934\mathrm{.}21$;

y $=$ z;

B$)$

float y;

y $=54\mathrm{.}9$;

C$)$

float v;

v $=1\mathrm{.}0$

D$)$

float w;

w $=1\mathrm{.}0$f;