$($TCO $3)$ In the Startup.cs file, what does the following code do$?$

public void ConfigureServices$($IServiceCollection services$)$

$\{$

$...$

services.AddDbContext$($options $=>$

options.UseSqlServer$($

Configuration.GetConnectionString$("$Customer$")))$;

$\}$

Group of answer choices

It sets up dependency injection to inject a CustomerContext object into any controllers that need it$.$

It specifies that EF Core should use a SQL Server database.

It reads the connection string for the database from a file.

All of the above