Select the sentence that has been correctly rewritten to subordinate the italicized portion. pay attention to the instructions in parentheses to you select your

*the police inspector looked for evidence.* he examined the apartment thoroughly. (present participle phrase)
a. looking for evidence, the police inspector examined the apartment thoroughly.
b. having looked for evidence, the police inspector examined the apartment thoroughly.
c. to have looked for evidence, the police inspector examined the apartment thoroughly