Attempts to launch EC2 instances into a VPC are failing because there are no available private IPv4 addresses. Which combination of actions will allow the SysOps administrator to launch the instances? (Choose two.)

When a VPC runs out of private IPv4 addresses, you need to expand its address space. Associating a secondary IPv4 CIDR block with the VPC directly adds a new range of private IP addresses that can then be used to create new subnets or extend existing ones, thereby providing more available IPs for EC2 instances. Creating a new subnet within the VPC is also necessary because subnets are where instances are actually launched, and each subnet draws its IP addresses from the VPC's overall CIDR blocks. Associating a primary IPv6 CIDR block won't solve the problem of insufficient IPv4 addresses. Modifying the CIDR block of the VPC is not directly possible; you can only associate additional CIDR blocks. Modifying the CIDR block of an existing subnet is also not possible after creation.