Which award may be authorized for meritorious service or achievement in a combat or non-combat situation, based on sustained performance or specific achievement of a superlative nature, and shall be of such merit as to warrant more tangible recognition than is possible by a fitness report or performance evaluation, but which does not warrant a Navy and Marine Corps Commendation Medal?
a) Meritorious Service Medal
b) Navy Cross
c) Achievement Medal
d) Meritorious Unit Commendation