For the numerical variables given below, which are discrete and which are continuous? (a) color of an M&M candy selected at random from a bag of M&M's discrete continuous not a numerical variable (b) number of green M&M's in a bag of M&M's discrete continuous not a numerical variable (c) weight (in grams) of a bag of M&M's discrete continuous not a numerical variable (d) gender of the next person to purchase a bag of M&M's at a particular grocery store discrete continuous not a numerical variable