What is the degree of 12x4 - 8x + 4x2 - 3?

A. 8

B. 4

C. 3

D. 12

In this problem, we are asked to determine the degree of the given expression 12X4 - 8X + 4X2 - 3. To answer this, first, we need to arrange the mathematical expression in descending order with respect to its power such as the new arrangement will become 12x4 + 4x2 - 8x - 3. The degree is clearly visible and it is 4. Therefore, the answer to this problem is the letter "B" which is 4.