If W is the mode and Z is the median of the following set of numbers:2.4,2.1,1.6,2.6,3.7,2.1 and 2.8 then (3W, 2Z) is

• A.(2.6,2.5)
• B.(2.1,2.5)
• C.(7.8,5.0)
• D.(5.2,5.0)