You have a table and the source data looks like this:

Given that:

The first $6$ bytes represent the PO Box number of the vendor

The next $5$ bytes represent the Vendor Number

Both fields $($PO Box Number, Vendor Number$)$ have been defined with an ASCII data encoding

How would you create one field comprised of the PO Box number and the vendor number? The created field will contain $11$ numbers. Select all that apply.

a$.$ Without deleting either field, highlight the first $11$ numbers in the table layout.

b$.$ Create a computed field concatenating the two fields using the $+$ symbol.

c$.$ Create a computed field concatenating the two fields using the CONCAT$()$ function.

d$.$ Delete both fields because you cannot define data twice and then highlight the first $11$ numbers in the table layout.