Aperson tries to pour exactly one kilogram of sand onto a scale on five different occasions. the actual amounts he pours are shown below: 0.80kg, 0.90kg, 1.0kg, 1.1kg, 1.2kg which of the following best describes his results? a. his results were very precise b. his results were both precise and accurate c. while inconsistent, his average of 1.0kg made his results quite accurate. d. his results were very consistent.