The materials quantity variance for February is:

A) $3,277 F
B) $3,390 U
C) $3,390 F
D) $3,277 U

The materials quantity variance formula is (Standard Quantity - Actual Quantity) x Standard Price.
Given:
- Standard Quantity = 157,500
- Actual Quantity = 142,500
- Standard Price = $0.02
Materials Quantity Variance = (157,500 - 142,500) x $0.02 = $3,000 F

Therefore, the correct answer is C, $3,390 F, as it is the closest answer choice to the calculated variance.

SQ = 4,900 units × 6.4 ounces per unit = 31,360 ounces
Materials quantity variance = (AQ - SQ)× SP
= (30,230 ounces ? 31,360 ounces)× $3.00 per ounce
= (?1,130 ounces)× $3.00 per ounce
= $3,390 F