i need help if i get these wrong i fall

Question

1. 1+1
A. 1
B. 3
C. 11*
D. 2

2. 2+8
A. 10
B. 28*
C. 6
D. 15

Answer 1

You fail.

Answer 2

your answers are ok, if the values represent strings and concatenation.
You can use a computer, but not a calculator?