Using the merge method of the Map interface, which statement correctly updates the salesTotalByDept map of type Map<String,Integer> to update the sales total for a dept by an integer sales value?

Question

Answer

salesTotalByDept.merge(dept, sales,(d,s) -> s + 1);

Answer

sales.merge(salesTotalByDept, dept, (d,s) -> s + sales);

Answer

dept.merge(salesTotalByDept, sales, (d,s) -> s + sales);

Answer

salesTotalByDept.merge(dept, sales, (d,s) -> s + sales);

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Using the merge method of the Map interface, which statement correctly updates t...

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