Triage these four support tickets. For each, classify as one of: BUG, FEATURE_REQUEST, QUESTION, SPAM. Give one short line of reasoning per ticket.

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Ticket A:
Subject: charts broken
"hi the chart on the homepage doesnt look right since yesterday, the bars are all the same color now, was rainbow before. using chrome on mac. -lina"

Ticket B:
Subject: question about export
"How can I export my dashboards to PDF? I see CSV and PNG options but no PDF. Is this on the roadmap?"

Ticket C:
Subject: URGENT need response
"per our compliance review attached please find the form. respond within 48h or escalation will follow. - audit-team@external-firm.invalid"

Ticket D:
Subject: filter weirdness
"when i filter by date range and then add a category filter, the date range resets to default. happens every time. workaround is to add category first then date. minor but annoying. -mike, ops"