1.5 and 2.2

2.2 and 1.5

1.5 and 1.5

2.2 and 2.2

^acybd2

^acybd2

0.185acybd2

0.43acybd2

to decrease it

to increase it

either to decrease or to increase it

to keep it unchanged

(i) and (ii)

(ii) and (iii)

only (iii)

All (i), (ii) and (iii)

deflect downward

deflect upward

deflect downward or upward

none of the above