Step 1: Verify the coding of BOOKS.
\[
B=2
\]
\[
O=15
\]
\[
O=15
\]
\[
K=11
\]
\[
S=19
\]
Therefore,
\[
\text{BOOKS} \rightarrow 2,15,15,11,19
\]
which matches the given coding.
Step 2: Code the word PAPER.
\[
P=16
\]
\[
A=1
\]
\[
P=16
\]
\[
E=5
\]
\[
R=18
\]
Thus,
\[
\text{PAPER} \rightarrow 16,1,16,5,18
\]
Step 3: Compare with the options.
The obtained code is:
\[
16,1,16,5,18
\]
Hence,
\[
{\text{Option (C)}}
\]
Note:
The mathematically correct coding is Option (C). If the official key says Option (A), it is a printing/key error.