If you have the answer, then take the time to check it, to complete it, so that your e-mail is enough for him and that he does not have to look for additional information elsewhere.
Uma unempendulo, bese uthatha isikhathi ukuyihlola, ukuyiqedela, ukuze i-imeyili yakho ikwanele futhi akudingeki ukuba afune ulwazi olwengeziwe kwenye indawo.