Unusual Options Activity: Bullish Trade on CRH Public Limited

We noticed a bullish trade on CRH Public Limited (CRH). So far, the May 87.5 and 95 calls have each traded 2,500 contracts, outstripping open interest at either strike by a wide margin. Today's volume at those strikes has been moving in matched lots with the 87.5 moving at the ask or high in the spread, while the 95s are moving lower in the spread. This suggests this is a bullish debit spread being bought to open.