Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_39 (attendance INTEGER, away_team VARCHAR)
### Question:
What is the highest Attendance when the away team was Wrexham?
### Answer:
SELECT MAX(attendance) FROM table_name_39 WHERE away_team = "wrexham"