Which of these is required to ensure items are updated in the Guided Selling cart?

Which of these is required to ensure items are updated in the Guided Selling cart?

Note: This question displayed answer options in random order when taking this Test.
A . done
B . vlcCart
C . CpqAppHandler
D . createCart
E . getCartsltems
F . getCartsProducts
G . putCartsltems
H . postCartsItems
. checkout
. submit

Answer: G