Let f be a function defined on binary strings as follows: If u is a string such that u = abc where lal = |b| = |c| then f(u) = a. %3D For example, if u = 101101011, then f(u) = 101. Which of the following statements are true? a. The cardinality of the set {u | f(u) = u} is 1. b.f is a total function. Oc. If Jul = 24, then f(f(u) is not defined. O d. F is an injection. e. The range of f is the set of all binary strings. f. fis onto the set of all binary strings.

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