What are the two most efficient ways for a Salesforce Admin to accomplish this task?

Universal Containers is launching a Community to drive their channel sales.

The requirements are as follows:

• Integration with a Back-Office Legacy System that supports API-Level Integration and Salesforce Connect. This integration does not exist today.

• Integration with a pricing and quoting tool. This integration exists today for internal users in the Salesforce org.

• External partner users must be able to configure the quote using the pricing and quoting tool from the Community.

• The pricing and quoting tool must support Community users.

• Universal Containers owns licenses for Salesforce Connect .

What are the two most efficient ways for a Salesforce Admin to accomplish this task? Choose two answers
A . Integrate the Back-Office Legacy System using custom code development.
B . Integrate the pricing and quoting tool by configuring external users to make it available in the Community
C . Integrate the Back-Office Legacy System using Salesforce Connect
D . Integrate the pricing and quoting tool by creating custom code to make it available in the Community