The configurations of the defined route-policy Set-cost are as follows: ip ip-prefix 1 permit 10.1.0.0 16 route-policy Set-cost permit node 10 if-matc

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A. The route 10.1.0.0/16 matches node 10 and its cost is set to 300.
B. The route 10.1.0.0/16 matching node 10 also matches node 20 subsequently and its cost is finally set to 200.

It should be one answer is A 

https://www.freecram.net/question/Huawei.H12-221.v2018-03-28.q225/the-defined-route-policy-set-cost-configurations-are-ip-ip-prefix-1-permit-10.1.0.0-16-route-policy

https://ccnav7.net/which-of-the-following-statements-is-true-8/

https://examposter.com/which-of-the-following-statements-is-true-8/

Question came in huawei ict competition and I can assure you it is multiple choice

It may even be multiple choice questions requiring only one answer

B cannot be right.

Refer here

https://www.freecram.net/question/Huawei.H12-221.v2018-03-28.q225/the-defined-route-policy-set-cost-configurations-are-ip-ip-prefix-1-permit-10.1.0.0-16-route-policy

https://ccnav7.net/which-of-the-following-statements-is-true-8/

https://examposter.com/which-of-the-following-statements-is-true-8/

or with this question:

. Which of the following route prefixes meet the following IP-Prefix conditions? (Multiple choices)
“ip ip-prefix test index 10 permit 20,0.0.0 16 greater-equal 24 less equal 28”

A.20.0.1.0/23
B.20.0.1.0/24
C.20.0.1.0/25
D.20.0.1.0/28

Answer: BCD

Come to think of it, C is also correct. Refer to this question:

Which of the following route prefixes meet the following IP-Prefix conditions? (Multiple choices)
“ip ip-prefix test index 10 permit 20,0.0.0 16 greater-equal 24 less equal 28”
A.20.0.1.0/23
B.20.0.1.0/24
C.20.0.1.0/25
D.20.0.1.0/28

Answer: BCD