Option 3

Logic

not completed

not completed

not completed

completed

not (A or B or C)

invalide, true argument, false conclusion

f means wether function is true

line 5: 2,4CD

C is not a letter

DS, keeping part is on the end

(z’and x’) or ( x and y’)

c’ and b

unless = or

x approach and and x not approach a which is a contradiction so x aproach b

double check all correct squares are ticked

look for how to use CD, and trans to get HS

deduce that using acp multiple times