PLEASE HELP! ON TIMER! Raul tried to find the midpoint between 5 & 3i and 12 + 7i. Check his work below.
Sum=(5+(-3))+(12+7)i
=2+19i
so the midpoint is 1+ 19over2 i
What mistake did Raul make?

A He subtracted the values instead of adding them.

B He did not add the corresponding parts of the complex numbers.

C He found the sum instead of the average because he forgot to divide by two.

D He added the numbers in the wrong order.