Step 1: Recall definitions.
P) Barnum Effect — believing very vague, general personality statements apply uniquely to oneself (e.g., horoscopes). $\Rightarrow$ (iv).
Q) Reference Group Effect — rating oneself relative to one's social/cultural group norms. $\Rightarrow$ (iii).
R) Self-Serving Bias — crediting oneself for success while externalizing failures. $\Rightarrow$ (i).
S) Self-Effacing (Modesty) Bias — taking blame for failures and downplaying success. $\Rightarrow$ (ii).
Step 2: Match to the option.
The mapping \(P\!\to\!(iv),\; Q\!\to\!(iii),\; R\!\to\!(i),\; S\!\to\!(ii)\) corresponds to option (B).