GAUSS8 2020 Problem 12

In the addition shown, each of P, Q and R is a digit.

\begin{array}{lllll} &&P &Q &R \\ +&&& Q& R \\ \hline &1&0&1&2 \end{array}

The value of P+Q+R is

Answer Choices
A. 12
B. 15
C. 13
D. 22
E. 20