The coding pattern is based on changing each letter of the given word according to the same coded-letter arrangement used in the examples.
The examples are:
\[
WONDER \rightarrow PESVMD
\]
and:
\[
MUSCLE \rightarrow VDFLRK.
\]
Using the same coding pattern for the words in List-I, we compare each word with the codes given in List-II.
For:
\[
SUMMER,
\]
the matching code is:
\[
BOSMFT.
\]
So:
\[
A-III.
\]
For:
\[
MASTER,
\]
the matching code is:
\[
UPHRQM.
\]
So:
\[
B-IV.
\]
For:
\[
STRONG,
\]
the matching code is:
\[
BUSLRD.
\]
So:
\[
C-I.
\]
For:
\[
NAGPUR,
\]
the matching code is:
\[
VNSRLD.
\]
So:
\[
D-II.
\]
Therefore, the correct matching is:
\[
A-III,\quad B-IV,\quad C-I,\quad D-II.
\]
Hence, the correct answer is option (B).