What is one disadvantage of using dynamic blocks in Terraform?

What is one disadvantage of using dynamic blocks in Terraform?
A . They cannot be used to loop through a list of values
B . Dynamic blocks can construct repeatable nested blocks
C . They make configuration harder to read and understand
D . Terraform will run more slowly

Answer: A

Explanation:

Reference: https://github.com/hashicorp/terraform/issues/19291