can you please help me with this question its number 1 because I have an exam and I don't know this one on my review

1. An ecologist studying differences in populations of a certain species of lizards on two di'erent islands collects lizards in live traps, weighs them, and then releases them again. (He marks them so he won't weigh the same lizard twice . Durin one stud cried, he collects the following data. All weights are in grams. \"-11 Std. Dev. ( Shec- Island Pi Island Which of the following is the correct expression for the test statistic to test the hypothesis that the mean weights on the two islands are equal? 46.5-44.2 A. t:.. 5.972 +4.242 24 3o 46.5-44.2 I = i597 4.24 _+ _ 24 30 46.544.2 [5.91\"2 +4.242 54 _ 46.544.2 '[gf J27: J3_o 46.5-44.2 E. t=- F972 + {4.242 24 30 C. t: t