Give the truth value of the following statements:

a) All prime numbers are odd.
b) The diagonals of a square have the same length.
c) There exists an infinte amount of (ordinairy) fractions between 0 and 1.
d) $\sqrt{4}=\pm 2$
e) The equation $x^2-2x-24=0$ has 2 solutions.
f) 0 is the smallest natural number.