If the input is '4 2 3 1', and the rearrangement steps are to sort in ascending order, what is the output?

A. 1 2 3 4

From the input 'dog cat mouse bird', what is the output after rearranging by the number of letters in each word?

D. BIRD CAT DOG MOUSE

Given the input '5 3 8 1 6', what is the output after rearranging in descending order?

A. 8 6 5 3 1

For the input 'red green blue yellow', what is the output after rearranging by color spectrum order?

C. GREEN BLUE RED YELLOW

What is the H.C.F. of the polynomials 2x^2 + 4x and 4x^2 + 8x?

A. 2X