Sunrise Sky Spa creates a function to model their memberships over the years since 2000. This graph shows a function of the number of memberships at Sunrise Spa, M(t), where t is the number of years since 2000. [The graph has number of years since 2000 plotted on the x axis and number of memberships in thousands plotted on the y axis and shows a curve that begins at (0, 12), falls slightly, rises with decreasing steepness to the point, labeled A, and then rises with increasing steepness to the point, labeled B. The curve reaches its maximum, then falls with increasing steepness, and rises again.] 2018 WGU, Powered by GeoGebra Question 11 of 12 Question 11This is not a form; we suggest that you use the browse mode and read all parts of the question carefully. Which statement is true about the portion of the graph from point A to point B? The segment is concave up. It implies that the number of memberships increased faster and faster. The segment is concave down. It implies that the number of memberships increased faster and faster. The segment is concave down. It implies that the number of memberships increased more and more slowly. The segment is concave up. It implies that the number of memberships increased more and more slowly