In the following question, select the related letters from the given alternatives.
TEAK : YJFP : : COLD : ?

The pair $$\text{TEAK} : \text{YJFP}$$ suggests an alphabetical coding scheme. Convert every letter to its position in the English alphabet.

$$T(20),\;E(5),\;A(1),\;K(11)$$
$$Y(25),\;J(10),\;F(6),\;P(16)$$

Observe the difference for each corresponding position:

$$25-20=5,\;10-5=5,\;6-1=5,\;16-11=5$$

Thus, every letter in TEAK is shifted $$+5$$ places forward in the alphabet to obtain YJFP.

Apply the same $$+5$$ shift to $$\text{COLD}$$:

$$C(3)+5 = 8 \Rightarrow H$$
$$O(15)+5 = 20 \Rightarrow T$$
$$L(12)+5 = 17 \Rightarrow Q$$
$$D(4)+5 = 9 \Rightarrow I$$

So, $$\text{COLD} \rightarrow \text{HTQI}$$.

Therefore, the related letters are HTQI.

Option D which is: HTQI