Indicate whether the following statements are true or false.
a) The indirect object can be replaced by the pronouns lo, la, lo, las.
b) The indirect object can appear with the preposition "de".
c) The pronouns me, te, nos, os are also pronouns that can perform the function of indirect object.
d) It could also appear with transitive verbs.
e) The indirect object can appear twice in the sentence, once in the form of a pronoun and another in the form of a prepositional phrase with the preposition "to" or "for."