Que: Point out the wrong statement.

a. In every situation, the data generating mechanism can create predictors that only have a single unique value
b. Predictors might have only a handful of unique values that occur with very low frequencies
c. The function findLinearCombos uses the QR decomposition of a matrix to enumerate sets of linear combinations
d. All of the mentioned
Answer: In every situation, the data generating mechanism can create predictors that only have a single unique value

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