Problem: Which of the following sentences best adheres to AP Style and contains no punctuation, spelling, or grammatical errors?
- Unfortunately, these flashings are only short term and required constant repairs since they are moisture absorbent.
- Unfortunately, these flashing is only short-term and require constant repairs since they are moisture absorbent.
- Unfortunately, these flashing is only short-term an require constantly repairs since they are moisture absorbent.
- Unfortunately, these flashings are only short-term and require constant repairs since they are moisture absorbent.