The expression 60 ⋅ 1. 2 t 60⋅1.2 t 60, dot, 1, point, 2, start superscript, t, end superscript models the number of nano-related patents granted in the US as a function of years since 1991 19911991. What does 60 6060 represent in this expression? Choose 1 answer: Choose 1 answer: (Choice A) A The first nano-related patents were granted 60 6060 years before 1991 19911991. (Choice B) B There were 60 6060 nano-related patents granted in 1991 19911991. (Choice C) C The number of nano-related patents granted is multiplied by 60 6060 each year. Show Calculator