XC 14 is related to VG 1 in a certain way. In the same way, RD 18 is related to PH 5. To which of the given options is UP 4 related, following the same logic?

XC 14 → VG 1, ​RD 18 → PH 5
UP 4 → ?

Logic: ​First letter −2, second letter +4, number −13.

X −2→ V

C +4 → G

Numbers: 14 → 1 → −13

R −2 → P

D +4 → H 

Numbers: 18 → 5 → −13

Similarly,
UP 4 → ?

U −2  → S

P +4 → T

Number: 4 − 13 = −9

So, UP 4 → ST −9

Thus, the correct option is: (c)