SecurityContext - Lab question - Getting wrong answer

Kubernetes
#1

(1) The provided solution says D is the correct answer
But why is A also not the correct answer. Shouldn’t both A and D be correct?

(2) Different question: Is runAsUser: root not permitted? (Reference: B and C) anytime i specify runAsUser: root it throws error.

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#2
  1. “A” cannot be correct – capabilities are not allowed in spec-level securityContext blocks; you’ll get a syntax error.
  2. The field must be an integer, so runAsUser: root will fail due to a type clash. But runAsUser: 0 appears to be allowed.
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