A User Has Created a VPC with the Public and Private

A user has created a VPC with the public and private subnets using the VPC wizard. The VPC has CIDR 20.0.0.0/16. The public subnet uses CIDR 20.0.1.0/24. The user is planning to host a web server in the public subnet (port 80. and a DB server in the private subnet (port 3306) . The user is configuring a security group for the public subnet (WebSecGrp. and the private subnet (DBSecGrp) . Which of the below mentioned entries is required in the private subnet database security group (DBSecGrp) ?

A) Allow Inbound on port 3306 for Source Web Server Security Group (WebSecGrp)
B) Allow Inbound on port 3306 from source 20.0.0.0/16
C) Allow Outbound on port 3306 for Destination Web Server Security Group (WebSecGrp)
D) Allow Outbound on port 80 for Destination NAT Instance IP

Correct Answer:

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