Directions: This question consists of a sentence, parts of which have been jumbled. These parts have been labeled as P, Q, R, and S. Given below the sentence are four sequences, namely (a), (b), (c), and (d). You are required to re-arrange the jumbled parts of the sentence and mark your response accordingly. 

the “mother of Wi-Fi” (P) / Hedy Lamarr (Q) / is often called (R) / hollywood starlet (S)