Transaction Data

Hi,

The following is the exam question:

Which of the following is an example of transaction data?

(a) Incoming invoices.

(b) Outbound deliveries

(c) Vendors.

(d) Banks.

(e) Material masters

I got the answers as (a) and (b). Please explain why these called Transaction Data.

Also the other three (c), (d) & (e) are which data.

Thanks,

Jans