Mrs Black is going shopping with her daughter.They are looking for a present

Mrs Black is going shopping with her daughter.They are looking for a present
for Mr Black’s birthday.Mrs Black wants to buy him a new camera and Kitty wants
to buy him a jumper.They drive to the shop on the street.Mrs.Black goes to
the Electrical Shop on the third floor and Kitty goes to Men’s Clothes Shop on
the first floor.
When Mrs Black
gets to the Electrical Shop,she finds that cameras are sold
(卖 ) in the Camera Shop on the ground floor.She finds a
camera,but it’s too expensive.She wants to buy a cheaper one.Then she finds
another one.There is a discount on it.But it’s still a little expensive.So
she decides(决定) not to buy it.Then she goes to find Kitty on the first
floor.Kitty is looking for a jumper.She has only 10
dollars(美元) and it’s not enough.Then she sees her mother.At last,
they buy the jumper for Mr Black.
51.What do they want to buy for Mr.
Black at first?
A.Only a camera
B.Only a jumper