A Laboratory Validates a Method for Weighing Solid Dose Drug

A laboratory validates a method for weighing solid dose drug powders on a single balance used by 4 analysts. They establish the figures of merit shown in the portion of the uncertainty budget shown below.

A case sample is weighed on this balance with a result of 28.35 grams. What is the estimated uncertainty of this weight with a coverage factor of 2 (~95%) in grams?

A) 0.12
B) 1.31
C) 0.058
D) 0.060
E) none of the above