[Vocabulary] late/delayed/prolonged reply

[uktous]

Hi,

Background:
My friend sent me a letter.
She expected that I would reply to her letter (ie, by sending another letter) last week.
However, I sent her my letter this week.


Question:
Should I use "late, delayed, or prolonged"?


Sentence:
Sorry for the late/delayed/prolonged reply.


Thanks

 

[Barb_D]

I would suggest "late."

 

[philadelphia]

Barb answered.

Some examples regarding delayed and prolonged:
John's plane was delayed by an hour
John has just prolonged his vacation