a. 6 7 2 5 0 6 2 3 0 7 6

b. 4 1 2 8 5 4 1 2 9 3 1

c. 4 5 0 3 8 4 0 1 8 5 4

d. 5 7 1 5 9 4 1 3 9 5 5

**Answer:**b. 4 1 2 8 5 4 1 2 9 3 1

**Explanation:**
: Letters are arranged according to the digital sum roots which is explained by Example:

A = 1, B = 2, ..... ,H=8, I = 9, J = 10=1+0=1,M= 13= 1+3=4 & so on.

Similarly, code for MATHEMATICS is 4 1 2 8 5 4 1 2 9 3 1.