76. The passage suggests which of the following about the views held by researchers before 1927?
(A) Some researchers did not believe that deep events could actually occur.
(B) Many researchers rejected the use of P-S intervals for determining the depths ofearthquakes.
(C) Some researchers doubted that the mantle was too ductile to store the stress neededfor an earthquake.
(D) Few researchers accepted the current model of how shallow events occur.